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Finding the Fourth Proportional to 178,511.25, 267,635.61 and 85,082.61

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Solution

The fourth proportional to 178,511.25, 267,635.61 and 85,082.61 is: 127,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,511.25 : 267,635.61 = 85,082.61 : x
  2. Step 2: Convert to fraction form
    178,511.25/267,635.61 = 85,082.61/x
  3. Step 3: Cross multiply
    178,511.25x = 267,635.61 × 85,082.61
  4. Step 4: Simplify right side
    178,511.25x = 22,771,136,227.74
  5. Step 5: Solve for x
    x = 22,771,136,227.74/178,511.25
  6. Step 6: Final answer
    x = 127,561.35

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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.