Finding the Fourth Proportional to 122,019,619.20, 168,411,514.96 and 72,487,509.63
Calculator
Solution
The fourth proportional to 122,019,619.20, 168,411,514.96 and 72,487,509.63 is: 100,047,282.49
Step by Step Solution
- Step 1: Write the proportion equation
122,019,619.20 : 168,411,514.96 = 72,487,509.63 : x - Step 2: Convert to fraction form
122,019,619.20/168,411,514.96 = 72,487,509.63/x - Step 3: Cross multiply
122,019,619.20x = 168,411,514.96 × 72,487,509.63 - Step 4: Simplify right side
122,019,619.20x = 12,207,731,311,516,850 - Step 5: Solve for x
x = 12,207,731,311,516,850/122,019,619.20 - Step 6: Final answer
x = 100,047,282.49
Related Problems
Find fourth proportional to 61,009,809.60, 84,205,757.48 and 36,243,754.81
Half scale
Find fourth proportional to 244,039,238.40, 336,823,029.91 and 144,975,019.25
Double scale
Find fourth proportional to 122,019,620.20, 168,411,516.34 and 72,487,510.63
Similar ratio
Find fourth proportional to 183,029,428.80, 252,617,272.43 and 108,731,264.44
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.