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Finding the Fourth Proportional to 178,850, 267,866.76 and 85,421.36

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Solution

The fourth proportional to 178,850, 267,866.76 and 85,421.36 is: 127,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,850 : 267,866.76 = 85,421.36 : x
  2. Step 2: Convert to fraction form
    178,850/267,866.76 = 85,421.36/x
  3. Step 3: Cross multiply
    178,850x = 267,866.76 × 85,421.36
  4. Step 4: Simplify right side
    178,850x = 22,881,542,937.99
  5. Step 5: Solve for x
    x = 22,881,542,937.99/178,850
  6. Step 6: Final answer
    x = 127,937.06

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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.