Finding the Fourth Proportional to 122,995.80, 169,741.98 and 72,024.12
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Solution
The fourth proportional to 122,995.80, 169,741.98 and 72,024.12 is: 99,397.84
Step by Step Solution
- Step 1: Write the proportion equation
122,995.80 : 169,741.98 = 72,024.12 : x - Step 2: Convert to fraction form
122,995.80/169,741.98 = 72,024.12/x - Step 3: Cross multiply
122,995.80x = 169,741.98 × 72,024.12 - Step 4: Simplify right side
122,995.80x = 12,225,516,736.56 - Step 5: Solve for x
x = 12,225,516,736.56/122,995.80 - Step 6: Final answer
x = 99,397.84
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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.