Home / 131,923.69-198,151.16-78,719.75

Finding the Fourth Proportional to 131,923.69, 198,151.16 and 78,719.75

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Solution

The fourth proportional to 131,923.69, 198,151.16 and 78,719.75 is: 118,238.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,923.69 : 198,151.16 = 78,719.75 : x
  2. Step 2: Convert to fraction form
    131,923.69/198,151.16 = 78,719.75/x
  3. Step 3: Cross multiply
    131,923.69x = 198,151.16 × 78,719.75
  4. Step 4: Simplify right side
    131,923.69x = 15,598,409,578.92
  5. Step 5: Solve for x
    x = 15,598,409,578.92/131,923.69
  6. Step 6: Final answer
    x = 118,238.13

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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.