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Finding the Fourth Proportional to 118,407.40, 177,458 and 88,591.30

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Solution

The fourth proportional to 118,407.40, 177,458 and 88,591.30 is: 132,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,407.40 : 177,458 = 88,591.30 : x
  2. Step 2: Convert to fraction form
    118,407.40/177,458 = 88,591.30/x
  3. Step 3: Cross multiply
    118,407.40x = 177,458 × 88,591.30
  4. Step 4: Simplify right side
    118,407.40x = 15,721,234,915.40
  5. Step 5: Solve for x
    x = 15,721,234,915.40/118,407.40
  6. Step 6: Final answer
    x = 132,772.40

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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.