Home / 103,002.20-154,503.30-80,883.80

Finding the Fourth Proportional to 103,002.20, 154,503.30 and 80,883.80

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Solution

The fourth proportional to 103,002.20, 154,503.30 and 80,883.80 is: 121,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,002.20 : 154,503.30 = 80,883.80 : x
  2. Step 2: Convert to fraction form
    103,002.20/154,503.30 = 80,883.80/x
  3. Step 3: Cross multiply
    103,002.20x = 154,503.30 × 80,883.80
  4. Step 4: Simplify right side
    103,002.20x = 12,496,814,016.54
  5. Step 5: Solve for x
    x = 12,496,814,016.54/103,002.20
  6. Step 6: Final answer
    x = 121,325.70

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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.