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Finding the Fourth Proportional to 178,601,539.68, 267,978,127.34 and 86,553,793.35

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Solution

The fourth proportional to 178,601,539.68, 267,978,127.34 and 86,553,793.35 is: 129,867,432.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,601,539.68 : 267,978,127.34 = 86,553,793.35 : x
  2. Step 2: Convert to fraction form
    178,601,539.68/267,978,127.34 = 86,553,793.35/x
  3. Step 3: Cross multiply
    178,601,539.68x = 267,978,127.34 × 86,553,793.35
  4. Step 4: Simplify right side
    178,601,539.68x = 23,194,523,456,322,728
  5. Step 5: Solve for x
    x = 23,194,523,456,322,728/178,601,539.68
  6. Step 6: Final answer
    x = 129,867,432.82

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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.