Home / 123,629.20-185,266.20-76,854.80

Finding the Fourth Proportional to 123,629.20, 185,266.20 and 76,854.80

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Solution

The fourth proportional to 123,629.20, 185,266.20 and 76,854.80 is: 115,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,629.20 : 185,266.20 = 76,854.80 : x
  2. Step 2: Convert to fraction form
    123,629.20/185,266.20 = 76,854.80/x
  3. Step 3: Cross multiply
    123,629.20x = 185,266.20 × 76,854.80
  4. Step 4: Simplify right side
    123,629.20x = 14,238,596,747.76
  5. Step 5: Solve for x
    x = 14,238,596,747.76/123,629.20
  6. Step 6: Final answer
    x = 115,171.79

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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.