Home / 138,982.28-191,790.41-75,318.71

Finding the Fourth Proportional to 138,982.28, 191,790.41 and 75,318.71

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Solution

The fourth proportional to 138,982.28, 191,790.41 and 75,318.71 is: 103,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,982.28 : 191,790.41 = 75,318.71 : x
  2. Step 2: Convert to fraction form
    138,982.28/191,790.41 = 75,318.71/x
  3. Step 3: Cross multiply
    138,982.28x = 191,790.41 × 75,318.71
  4. Step 4: Simplify right side
    138,982.28x = 14,445,406,226.68
  5. Step 5: Solve for x
    x = 14,445,406,226.68/138,982.28
  6. Step 6: Final answer
    x = 103,937.04

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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.