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Finding the Fourth Proportional to 138,109.84, 206,832.45 and 93,601.55

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Solution

The fourth proportional to 138,109.84, 206,832.45 and 93,601.55 is: 140,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109.84 : 206,832.45 = 93,601.55 : x
  2. Step 2: Convert to fraction form
    138,109.84/206,832.45 = 93,601.55/x
  3. Step 3: Cross multiply
    138,109.84x = 206,832.45 × 93,601.55
  4. Step 4: Simplify right side
    138,109.84x = 19,359,837,910.30
  5. Step 5: Solve for x
    x = 19,359,837,910.30/138,109.84
  6. Step 6: Final answer
    x = 140,177.11

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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.