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Finding the Fourth Proportional to 178,702.59, 267,645.65 and 85,273.95

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Solution

The fourth proportional to 178,702.59, 267,645.65 and 85,273.95 is: 127,716.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,702.59 : 267,645.65 = 85,273.95 : x
  2. Step 2: Convert to fraction form
    178,702.59/267,645.65 = 85,273.95/x
  3. Step 3: Cross multiply
    178,702.59x = 267,645.65 × 85,273.95
  4. Step 4: Simplify right side
    178,702.59x = 22,823,201,349.45
  5. Step 5: Solve for x
    x = 22,823,201,349.45/178,702.59
  6. Step 6: Final answer
    x = 127,716.12

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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.