Home / 124,987.31-172,562.96-111,535.43

Finding the Fourth Proportional to 124,987.31, 172,562.96 and 111,535.43

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Solution

The fourth proportional to 124,987.31, 172,562.96 and 111,535.43 is: 153,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,987.31 : 172,562.96 = 111,535.43 : x
  2. Step 2: Convert to fraction form
    124,987.31/172,562.96 = 111,535.43/x
  3. Step 3: Cross multiply
    124,987.31x = 172,562.96 × 111,535.43
  4. Step 4: Simplify right side
    124,987.31x = 19,246,884,655.92
  5. Step 5: Solve for x
    x = 19,246,884,655.92/124,987.31
  6. Step 6: Final answer
    x = 153,990.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.