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Finding the Fourth Proportional to 92,105.60, 138,158.08 and 39,480.96

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Solution

The fourth proportional to 92,105.60, 138,158.08 and 39,480.96 is: 59,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,105.60 : 138,158.08 = 39,480.96 : x
  2. Step 2: Convert to fraction form
    92,105.60/138,158.08 = 39,480.96/x
  3. Step 3: Cross multiply
    92,105.60x = 138,158.08 × 39,480.96
  4. Step 4: Simplify right side
    92,105.60x = 5,454,613,630.16
  5. Step 5: Solve for x
    x = 5,454,613,630.16/92,105.60
  6. Step 6: Final answer
    x = 59,221.30

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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.