Home / 206,378,264.60-309,471,736.16-76,951,123.40

Finding the Fourth Proportional to 206,378,264.60, 309,471,736.16 and 76,951,123.40

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Solution

The fourth proportional to 206,378,264.60, 309,471,736.16 and 76,951,123.40 is: 115,391,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,378,264.60 : 309,471,736.16 = 76,951,123.40 : x
  2. Step 2: Convert to fraction form
    206,378,264.60/309,471,736.16 = 76,951,123.40/x
  3. Step 3: Cross multiply
    206,378,264.60x = 309,471,736.16 × 76,951,123.40
  4. Step 4: Simplify right side
    206,378,264.60x = 23,814,197,758,060,408
  5. Step 5: Solve for x
    x = 23,814,197,758,060,408/206,378,264.60
  6. Step 6: Final answer
    x = 115,391,016.61

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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.