Home / 107,981,868.90-161,972,803.35-99,667,769.70

Finding the Fourth Proportional to 107,981,868.90, 161,972,803.35 and 99,667,769.70

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Solution

The fourth proportional to 107,981,868.90, 161,972,803.35 and 99,667,769.70 is: 149,501,654.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,981,868.90 : 161,972,803.35 = 99,667,769.70 : x
  2. Step 2: Convert to fraction form
    107,981,868.90/161,972,803.35 = 99,667,769.70/x
  3. Step 3: Cross multiply
    107,981,868.90x = 161,972,803.35 × 99,667,769.70
  4. Step 4: Simplify right side
    107,981,868.90x = 16,143,468,061,951,188
  5. Step 5: Solve for x
    x = 16,143,468,061,951,188/107,981,868.90
  6. Step 6: Final answer
    x = 149,501,654.55

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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.