Home / 138,801.83-191,546.28-75,139.61

Finding the Fourth Proportional to 138,801.83, 191,546.28 and 75,139.61

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Solution

The fourth proportional to 138,801.83, 191,546.28 and 75,139.61 is: 103,692.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.83 : 191,546.28 = 75,139.61 : x
  2. Step 2: Convert to fraction form
    138,801.83/191,546.28 = 75,139.61/x
  3. Step 3: Cross multiply
    138,801.83x = 191,546.28 × 75,139.61
  4. Step 4: Simplify right side
    138,801.83x = 14,392,711,818.42
  5. Step 5: Solve for x
    x = 14,392,711,818.42/138,801.83
  6. Step 6: Final answer
    x = 103,692.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.