Home / 115,171.20-172,562.40-55,879.20

Finding the Fourth Proportional to 115,171.20, 172,562.40 and 55,879.20

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Solution

The fourth proportional to 115,171.20, 172,562.40 and 55,879.20 is: 83,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,171.20 : 172,562.40 = 55,879.20 : x
  2. Step 2: Convert to fraction form
    115,171.20/172,562.40 = 55,879.20/x
  3. Step 3: Cross multiply
    115,171.20x = 172,562.40 × 55,879.20
  4. Step 4: Simplify right side
    115,171.20x = 9,642,648,862.08
  5. Step 5: Solve for x
    x = 9,642,648,862.08/115,171.20
  6. Step 6: Final answer
    x = 83,724.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.