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Finding the Fourth Proportional to 178,211.80, 267,188.10 and 72,976.60

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Solution

The fourth proportional to 178,211.80, 267,188.10 and 72,976.60 is: 109,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,211.80 : 267,188.10 = 72,976.60 : x
  2. Step 2: Convert to fraction form
    178,211.80/267,188.10 = 72,976.60/x
  3. Step 3: Cross multiply
    178,211.80x = 267,188.10 × 72,976.60
  4. Step 4: Simplify right side
    178,211.80x = 19,498,479,098.46
  5. Step 5: Solve for x
    x = 19,498,479,098.46/178,211.80
  6. Step 6: Final answer
    x = 109,411.83

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1.5x scale

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.