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Finding the Fourth Proportional to 185,590.64, 278,385.90 and 67,261.76

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Solution

The fourth proportional to 185,590.64, 278,385.90 and 67,261.76 is: 100,892.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,590.64 : 278,385.90 = 67,261.76 : x
  2. Step 2: Convert to fraction form
    185,590.64/278,385.90 = 67,261.76/x
  3. Step 3: Cross multiply
    185,590.64x = 278,385.90 × 67,261.76
  4. Step 4: Simplify right side
    185,590.64x = 18,724,725,593.18
  5. Step 5: Solve for x
    x = 18,724,725,593.18/185,590.64
  6. Step 6: Final answer
    x = 100,892.62

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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.