Finding the Fourth Proportional to 124,787.13, 187,268.18 and 72,124.17
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Solution
The fourth proportional to 124,787.13, 187,268.18 and 72,124.17 is: 108,236.82
Step by Step Solution
- Step 1: Write the proportion equation
124,787.13 : 187,268.18 = 72,124.17 : x - Step 2: Convert to fraction form
124,787.13/187,268.18 = 72,124.17/x - Step 3: Cross multiply
124,787.13x = 187,268.18 × 72,124.17 - Step 4: Simplify right side
124,787.13x = 13,506,561,689.29 - Step 5: Solve for x
x = 13,506,561,689.29/124,787.13 - Step 6: Final answer
x = 108,236.82
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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.