Home / 104,002.20-156,003.30-91,171.80

Finding the Fourth Proportional to 104,002.20, 156,003.30 and 91,171.80

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Solution

The fourth proportional to 104,002.20, 156,003.30 and 91,171.80 is: 136,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,002.20 : 156,003.30 = 91,171.80 : x
  2. Step 2: Convert to fraction form
    104,002.20/156,003.30 = 91,171.80/x
  3. Step 3: Cross multiply
    104,002.20x = 156,003.30 × 91,171.80
  4. Step 4: Simplify right side
    104,002.20x = 14,223,101,666.94
  5. Step 5: Solve for x
    x = 14,223,101,666.94/104,002.20
  6. Step 6: Final answer
    x = 136,757.70

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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.