Home / 155,474.31-231,998.91-138,719.19

Finding the Fourth Proportional to 155,474.31, 231,998.91 and 138,719.19

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Solution

The fourth proportional to 155,474.31, 231,998.91 and 138,719.19 is: 206,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,474.31 : 231,998.91 = 138,719.19 : x
  2. Step 2: Convert to fraction form
    155,474.31/231,998.91 = 138,719.19/x
  3. Step 3: Cross multiply
    155,474.31x = 231,998.91 × 138,719.19
  4. Step 4: Simplify right side
    155,474.31x = 32,182,700,876.08
  5. Step 5: Solve for x
    x = 32,182,700,876.08/155,474.31
  6. Step 6: Final answer
    x = 206,996.90

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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.