Home / 138,983.28-191,791.79-75,319.71

Finding the Fourth Proportional to 138,983.28, 191,791.79 and 75,319.71

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Solution

The fourth proportional to 138,983.28, 191,791.79 and 75,319.71 is: 103,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,983.28 : 191,791.79 = 75,319.71 : x
  2. Step 2: Convert to fraction form
    138,983.28/191,791.79 = 75,319.71/x
  3. Step 3: Cross multiply
    138,983.28x = 191,791.79 × 75,319.71
  4. Step 4: Simplify right side
    138,983.28x = 14,445,702,003.18
  5. Step 5: Solve for x
    x = 14,445,702,003.18/138,983.28
  6. Step 6: Final answer
    x = 103,938.42

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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.