Home / 155,456.46-231,972.23-138,701.30

Finding the Fourth Proportional to 155,456.46, 231,972.23 and 138,701.30

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Solution

The fourth proportional to 155,456.46, 231,972.23 and 138,701.30 is: 206,970.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,456.46 : 231,972.23 = 138,701.30 : x
  2. Step 2: Convert to fraction form
    155,456.46/231,972.23 = 138,701.30/x
  3. Step 3: Cross multiply
    155,456.46x = 231,972.23 × 138,701.30
  4. Step 4: Simplify right side
    155,456.46x = 32,174,849,864.90
  5. Step 5: Solve for x
    x = 32,174,849,864.90/155,456.46
  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.