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Finding the Fourth Proportional to 92,100.78, 138,151.18 and 25,540.92

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Solution

The fourth proportional to 92,100.78, 138,151.18 and 25,540.92 is: 38,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,100.78 : 138,151.18 = 25,540.92 : x
  2. Step 2: Convert to fraction form
    92,100.78/138,151.18 = 25,540.92/x
  3. Step 3: Cross multiply
    92,100.78x = 138,151.18 × 25,540.92
  4. Step 4: Simplify right side
    92,100.78x = 3,528,508,236.29
  5. Step 5: Solve for x
    x = 3,528,508,236.29/92,100.78
  6. Step 6: Final answer
    x = 38,311.38

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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.