Home / 238,899.92-358,382.82-81,086

Finding the Fourth Proportional to 238,899.92, 358,382.82 and 81,086

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Solution

The fourth proportional to 238,899.92, 358,382.82 and 81,086 is: 121,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,899.92 : 358,382.82 = 81,086 : x
  2. Step 2: Convert to fraction form
    238,899.92/358,382.82 = 81,086/x
  3. Step 3: Cross multiply
    238,899.92x = 358,382.82 × 81,086
  4. Step 4: Simplify right side
    238,899.92x = 29,059,829,342.52
  5. Step 5: Solve for x
    x = 29,059,829,342.52/238,899.92
  6. Step 6: Final answer
    x = 121,640.18

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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.