Home / 138,816.52-191,567.76-75,154.48

Finding the Fourth Proportional to 138,816.52, 191,567.76 and 75,154.48

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Solution

The fourth proportional to 138,816.52, 191,567.76 and 75,154.48 is: 103,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,816.52 : 191,567.76 = 75,154.48 : x
  2. Step 2: Convert to fraction form
    138,816.52/191,567.76 = 75,154.48/x
  3. Step 3: Cross multiply
    138,816.52x = 191,567.76 × 75,154.48
  4. Step 4: Simplify right side
    138,816.52x = 14,397,175,387.56
  5. Step 5: Solve for x
    x = 14,397,175,387.56/138,816.52
  6. Step 6: Final answer
    x = 103,713.70

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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.