Home / 82,776.20-124,164.30-74,481.80

Finding the Fourth Proportional to 82,776.20, 124,164.30 and 74,481.80

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Solution

The fourth proportional to 82,776.20, 124,164.30 and 74,481.80 is: 111,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,776.20 : 124,164.30 = 74,481.80 : x
  2. Step 2: Convert to fraction form
    82,776.20/124,164.30 = 74,481.80/x
  3. Step 3: Cross multiply
    82,776.20x = 124,164.30 × 74,481.80
  4. Step 4: Simplify right side
    82,776.20x = 9,247,980,559.74
  5. Step 5: Solve for x
    x = 9,247,980,559.74/82,776.20
  6. Step 6: Final answer
    x = 111,722.70

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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.