Home / 82,613.16-123,231.60-74,640.60

Finding the Fourth Proportional to 82,613.16, 123,231.60 and 74,640.60

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Solution

The fourth proportional to 82,613.16, 123,231.60 and 74,640.60 is: 111,339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,613.16 : 123,231.60 = 74,640.60 : x
  2. Step 2: Convert to fraction form
    82,613.16/123,231.60 = 74,640.60/x
  3. Step 3: Cross multiply
    82,613.16x = 123,231.60 × 74,640.60
  4. Step 4: Simplify right side
    82,613.16x = 9,198,080,562.96
  5. Step 5: Solve for x
    x = 9,198,080,562.96/82,613.16
  6. Step 6: Final answer
    x = 111,339.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.