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Finding the Fourth Proportional to 104,560.80, 156,630.60 and 72,862.80

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Solution

The fourth proportional to 104,560.80, 156,630.60 and 72,862.80 is: 109,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,560.80 : 156,630.60 = 72,862.80 : x
  2. Step 2: Convert to fraction form
    104,560.80/156,630.60 = 72,862.80/x
  3. Step 3: Cross multiply
    104,560.80x = 156,630.60 × 72,862.80
  4. Step 4: Simplify right side
    104,560.80x = 11,412,544,081.68
  5. Step 5: Solve for x
    x = 11,412,544,081.68/104,560.80
  6. Step 6: Final answer
    x = 109,147.44

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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.