Finding the Fourth Proportional to 102,721.68, 141,753.20 and 57,400.04
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Solution
The fourth proportional to 102,721.68, 141,753.20 and 57,400.04 is: 79,210.53
Step by Step Solution
- Step 1: Write the proportion equation
102,721.68 : 141,753.20 = 57,400.04 : x - Step 2: Convert to fraction form
102,721.68/141,753.20 = 57,400.04/x - Step 3: Cross multiply
102,721.68x = 141,753.20 × 57,400.04 - Step 4: Simplify right side
102,721.68x = 8,136,639,350.13 - Step 5: Solve for x
x = 8,136,639,350.13/102,721.68 - Step 6: Final answer
x = 79,210.53
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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.