Home / 96,980.20-145,470.30-81,773.80

Finding the Fourth Proportional to 96,980.20, 145,470.30 and 81,773.80

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Solution

The fourth proportional to 96,980.20, 145,470.30 and 81,773.80 is: 122,660.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,980.20 : 145,470.30 = 81,773.80 : x
  2. Step 2: Convert to fraction form
    96,980.20/145,470.30 = 81,773.80/x
  3. Step 3: Cross multiply
    96,980.20x = 145,470.30 × 81,773.80
  4. Step 4: Simplify right side
    96,980.20x = 11,895,659,218.14
  5. Step 5: Solve for x
    x = 11,895,659,218.14/96,980.20
  6. Step 6: Final answer
    x = 122,660.70

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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.