Finding the Fourth Proportional to 128,132.74, 176,823.84 and 71,544.52
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Solution
The fourth proportional to 128,132.74, 176,823.84 and 71,544.52 is: 98,731.81
Step by Step Solution
- Step 1: Write the proportion equation
128,132.74 : 176,823.84 = 71,544.52 : x - Step 2: Convert to fraction form
128,132.74/176,823.84 = 71,544.52/x - Step 3: Cross multiply
128,132.74x = 176,823.84 × 71,544.52 - Step 4: Simplify right side
128,132.74x = 12,650,776,757.36 - Step 5: Solve for x
x = 12,650,776,757.36/128,132.74 - Step 6: Final answer
x = 98,731.81
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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.