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Finding the Fourth Proportional to 92,130.30, 138,103.11 and 38,835.09

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Solution

The fourth proportional to 92,130.30, 138,103.11 and 38,835.09 is: 58,213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,130.30 : 138,103.11 = 38,835.09 : x
  2. Step 2: Convert to fraction form
    92,130.30/138,103.11 = 38,835.09/x
  3. Step 3: Cross multiply
    92,130.30x = 138,103.11 × 38,835.09
  4. Step 4: Simplify right side
    92,130.30x = 5,363,246,706.13
  5. Step 5: Solve for x
    x = 5,363,246,706.13/92,130.30
  6. Step 6: Final answer
    x = 58,213.71

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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.