Home / 131,321,143.70-196,981,715.55-120,739,562.90

Finding the Fourth Proportional to 131,321,143.70, 196,981,715.55 and 120,739,562.90

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Solution

The fourth proportional to 131,321,143.70, 196,981,715.55 and 120,739,562.90 is: 181,109,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,321,143.70 : 196,981,715.55 = 120,739,562.90 : x
  2. Step 2: Convert to fraction form
    131,321,143.70/196,981,715.55 = 120,739,562.90/x
  3. Step 3: Cross multiply
    131,321,143.70x = 196,981,715.55 × 120,739,562.90
  4. Step 4: Simplify right side
    131,321,143.70x = 23,783,486,234,799,136
  5. Step 5: Solve for x
    x = 23,783,486,234,799,136/131,321,143.70
  6. Step 6: Final answer
    x = 181,109,344.35

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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.