Home / 155,456.47-231,972.24-138,701.30

Finding the Fourth Proportional to 155,456.47, 231,972.24 and 138,701.30

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Solution

The fourth proportional to 155,456.47, 231,972.24 and 138,701.30 is: 206,970.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,456.47 : 231,972.24 = 138,701.30 : x
  2. Step 2: Convert to fraction form
    155,456.47/231,972.24 = 138,701.30/x
  3. Step 3: Cross multiply
    155,456.47x = 231,972.24 × 138,701.30
  4. Step 4: Simplify right side
    155,456.47x = 32,174,850,558.41
  5. Step 5: Solve for x
    x = 32,174,850,558.41/155,456.47
  6. Step 6: Final answer
    x = 206,970.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.