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Finding the Fourth Proportional to 104,002.40, 156,157.20 and 80,655.20

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Solution

The fourth proportional to 104,002.40, 156,157.20 and 80,655.20 is: 121,101.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,002.40 : 156,157.20 = 80,655.20 : x
  2. Step 2: Convert to fraction form
    104,002.40/156,157.20 = 80,655.20/x
  3. Step 3: Cross multiply
    104,002.40x = 156,157.20 × 80,655.20
  4. Step 4: Simplify right side
    104,002.40x = 12,594,890,197.44
  5. Step 5: Solve for x
    x = 12,594,890,197.44/104,002.40
  6. Step 6: Final answer
    x = 121,101.92

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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.