Home / 115,142.22-172,463.28-55,853.28

Finding the Fourth Proportional to 115,142.22, 172,463.28 and 55,853.28

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Solution

The fourth proportional to 115,142.22, 172,463.28 and 55,853.28 is: 83,658.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,142.22 : 172,463.28 = 55,853.28 : x
  2. Step 2: Convert to fraction form
    115,142.22/172,463.28 = 55,853.28/x
  3. Step 3: Cross multiply
    115,142.22x = 172,463.28 × 55,853.28
  4. Step 4: Simplify right side
    115,142.22x = 9,632,639,867.56
  5. Step 5: Solve for x
    x = 9,632,639,867.56/115,142.22
  6. Step 6: Final answer
    x = 83,658.63

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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.