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Finding the Fourth Proportional to 168,102.20, 251,931.90 and 123,519.80

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Solution

The fourth proportional to 168,102.20, 251,931.90 and 123,519.80 is: 185,117.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,102.20 : 251,931.90 = 123,519.80 : x
  2. Step 2: Convert to fraction form
    168,102.20/251,931.90 = 123,519.80/x
  3. Step 3: Cross multiply
    168,102.20x = 251,931.90 × 123,519.80
  4. Step 4: Simplify right side
    168,102.20x = 31,118,577,901.62
  5. Step 5: Solve for x
    x = 31,118,577,901.62/168,102.20
  6. Step 6: Final answer
    x = 185,117.02

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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.