Home / 138,961.29-191,767.50-75,299.61

Finding the Fourth Proportional to 138,961.29, 191,767.50 and 75,299.61

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Solution

The fourth proportional to 138,961.29, 191,767.50 and 75,299.61 is: 103,913.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,961.29 : 191,767.50 = 75,299.61 : x
  2. Step 2: Convert to fraction form
    138,961.29/191,767.50 = 75,299.61/x
  3. Step 3: Cross multiply
    138,961.29x = 191,767.50 × 75,299.61
  4. Step 4: Simplify right side
    138,961.29x = 14,440,017,960.68
  5. Step 5: Solve for x
    x = 14,440,017,960.68/138,961.29
  6. Step 6: Final answer
    x = 103,913.96

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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.