Home / 138,823.72-208,321.26-54,569.14

Finding the Fourth Proportional to 138,823.72, 208,321.26 and 54,569.14

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Solution

The fourth proportional to 138,823.72, 208,321.26 and 54,569.14 is: 81,887.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,823.72 : 208,321.26 = 54,569.14 : x
  2. Step 2: Convert to fraction form
    138,823.72/208,321.26 = 54,569.14/x
  3. Step 3: Cross multiply
    138,823.72x = 208,321.26 × 54,569.14
  4. Step 4: Simplify right side
    138,823.72x = 11,367,912,001.92
  5. Step 5: Solve for x
    x = 11,367,912,001.92/138,823.72
  6. Step 6: Final answer
    x = 81,887.39

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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.