Finding the Fourth Proportional to 99,643,707.80, 149,465,561.70 and 79,488,315.80
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Solution
The fourth proportional to 99,643,707.80, 149,465,561.70 and 79,488,315.80 is: 119,232,473.70
Step by Step Solution
- Step 1: Write the proportion equation
99,643,707.80 : 149,465,561.70 = 79,488,315.80 : x - Step 2: Convert to fraction form
99,643,707.80/149,465,561.70 = 79,488,315.80/x - Step 3: Cross multiply
99,643,707.80x = 149,465,561.70 × 79,488,315.80 - Step 4: Simplify right side
99,643,707.80x = 11,880,765,769,633,984 - Step 5: Solve for x
x = 11,880,765,769,633,984/99,643,707.80 - Step 6: Final answer
x = 119,232,473.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.