Finding the Fourth Proportional to 121,737.60, 168,049.62 and 74,006.19
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Solution
The fourth proportional to 121,737.60, 168,049.62 and 74,006.19 is: 102,159.99
Step by Step Solution
- Step 1: Write the proportion equation
121,737.60 : 168,049.62 = 74,006.19 : x - Step 2: Convert to fraction form
121,737.60/168,049.62 = 74,006.19/x - Step 3: Cross multiply
121,737.60x = 168,049.62 × 74,006.19 - Step 4: Simplify right side
121,737.60x = 12,436,712,107.15 - Step 5: Solve for x
x = 12,436,712,107.15/121,737.60 - Step 6: Final answer
x = 102,159.99
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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.