Home / 186,979.10-280,565.85-81,808.70

Finding the Fourth Proportional to 186,979.10, 280,565.85 and 81,808.70

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Solution

The fourth proportional to 186,979.10, 280,565.85 and 81,808.70 is: 122,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,979.10 : 280,565.85 = 81,808.70 : x
  2. Step 2: Convert to fraction form
    186,979.10/280,565.85 = 81,808.70/x
  3. Step 3: Cross multiply
    186,979.10x = 280,565.85 × 81,808.70
  4. Step 4: Simplify right side
    186,979.10x = 22,952,727,452.90
  5. Step 5: Solve for x
    x = 22,952,727,452.90/186,979.10
  6. Step 6: Final answer
    x = 122,755.58

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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.