Home / 138,430.73-207,663.42-54,180.02

Finding the Fourth Proportional to 138,430.73, 207,663.42 and 54,180.02

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Solution

The fourth proportional to 138,430.73, 207,663.42 and 54,180.02 is: 81,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,430.73 : 207,663.42 = 54,180.02 : x
  2. Step 2: Convert to fraction form
    138,430.73/207,663.42 = 54,180.02/x
  3. Step 3: Cross multiply
    138,430.73x = 207,663.42 × 54,180.02
  4. Step 4: Simplify right side
    138,430.73x = 11,251,208,248.87
  5. Step 5: Solve for x
    x = 11,251,208,248.87/138,430.73
  6. Step 6: Final answer
    x = 81,276.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.