Home / 124,987.20-172,562.88-111,535.32

Finding the Fourth Proportional to 124,987.20, 172,562.88 and 111,535.32

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Solution

The fourth proportional to 124,987.20, 172,562.88 and 111,535.32 is: 153,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,987.20 : 172,562.88 = 111,535.32 : x
  2. Step 2: Convert to fraction form
    124,987.20/172,562.88 = 111,535.32/x
  3. Step 3: Cross multiply
    124,987.20x = 172,562.88 × 111,535.32
  4. Step 4: Simplify right side
    124,987.20x = 19,246,856,040.92
  5. Step 5: Solve for x
    x = 19,246,856,040.92/124,987.20
  6. Step 6: Final answer
    x = 153,990.62

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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.