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Finding the Fourth Proportional to 168,101.70, 251,931.15 and 123,519.30

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Solution

The fourth proportional to 168,101.70, 251,931.15 and 123,519.30 is: 185,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,101.70 : 251,931.15 = 123,519.30 : x
  2. Step 2: Convert to fraction form
    168,101.70/251,931.15 = 123,519.30/x
  3. Step 3: Cross multiply
    168,101.70x = 251,931.15 × 123,519.30
  4. Step 4: Simplify right side
    168,101.70x = 31,118,359,296.20
  5. Step 5: Solve for x
    x = 31,118,359,296.20/168,101.70
  6. Step 6: Final answer
    x = 185,116.27

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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.