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Finding the Fourth Proportional to 123,659.70, 185,489.55 and 111,193.80

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Solution

The fourth proportional to 123,659.70, 185,489.55 and 111,193.80 is: 166,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,659.70 : 185,489.55 = 111,193.80 : x
  2. Step 2: Convert to fraction form
    123,659.70/185,489.55 = 111,193.80/x
  3. Step 3: Cross multiply
    123,659.70x = 185,489.55 × 111,193.80
  4. Step 4: Simplify right side
    123,659.70x = 20,625,287,924.79
  5. Step 5: Solve for x
    x = 20,625,287,924.79/123,659.70
  6. Step 6: Final answer
    x = 166,790.70

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1.5x scale

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.