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Finding the Fourth Proportional to 124,719.80, 187,079.70 and 111,500.60

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Solution

The fourth proportional to 124,719.80, 187,079.70 and 111,500.60 is: 167,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,719.80 : 187,079.70 = 111,500.60 : x
  2. Step 2: Convert to fraction form
    124,719.80/187,079.70 = 111,500.60/x
  3. Step 3: Cross multiply
    124,719.80x = 187,079.70 × 111,500.60
  4. Step 4: Simplify right side
    124,719.80x = 20,859,498,797.82
  5. Step 5: Solve for x
    x = 20,859,498,797.82/124,719.80
  6. Step 6: Final answer
    x = 167,250.90

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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.