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Finding the Fourth Proportional to 104,073.20, 156,109.80 and 51,519.60

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Solution

The fourth proportional to 104,073.20, 156,109.80 and 51,519.60 is: 77,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,073.20 : 156,109.80 = 51,519.60 : x
  2. Step 2: Convert to fraction form
    104,073.20/156,109.80 = 51,519.60/x
  3. Step 3: Cross multiply
    104,073.20x = 156,109.80 × 51,519.60
  4. Step 4: Simplify right side
    104,073.20x = 8,042,714,452.08
  5. Step 5: Solve for x
    x = 8,042,714,452.08/104,073.20
  6. Step 6: Final answer
    x = 77,279.40

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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.