Finding the Fourth Proportional to 128,341.29, 177,132.87 and 74,657.46
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Solution
The fourth proportional to 128,341.29, 177,132.87 and 74,657.46 is: 103,040.03
Step by Step Solution
- Step 1: Write the proportion equation
128,341.29 : 177,132.87 = 74,657.46 : x - Step 2: Convert to fraction form
128,341.29/177,132.87 = 74,657.46/x - Step 3: Cross multiply
128,341.29x = 177,132.87 × 74,657.46 - Step 4: Simplify right side
128,341.29x = 13,224,290,156.71 - Step 5: Solve for x
x = 13,224,290,156.71/128,341.29 - Step 6: Final answer
x = 103,040.03
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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.