Finding the Fourth Proportional to 136,061.18, 187,766.68 and 74,809.96
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Solution
The fourth proportional to 136,061.18, 187,766.68 and 74,809.96 is: 103,238.98
Step by Step Solution
- Step 1: Write the proportion equation
136,061.18 : 187,766.68 = 74,809.96 : x - Step 2: Convert to fraction form
136,061.18/187,766.68 = 74,809.96/x - Step 3: Cross multiply
136,061.18x = 187,766.68 × 74,809.96 - Step 4: Simplify right side
136,061.18x = 14,046,817,820.13 - Step 5: Solve for x
x = 14,046,817,820.13/136,061.18 - Step 6: Final answer
x = 103,238.98
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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.