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Finding the Fourth Proportional to 104,003.40, 156,158.70 and 80,656.20

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Solution

The fourth proportional to 104,003.40, 156,158.70 and 80,656.20 is: 121,103.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,003.40 : 156,158.70 = 80,656.20 : x
  2. Step 2: Convert to fraction form
    104,003.40/156,158.70 = 80,656.20/x
  3. Step 3: Cross multiply
    104,003.40x = 156,158.70 × 80,656.20
  4. Step 4: Simplify right side
    104,003.40x = 12,595,167,338.94
  5. Step 5: Solve for x
    x = 12,595,167,338.94/104,003.40
  6. Step 6: Final answer
    x = 121,103.42

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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.