Home / 131,975.78-198,095.49-72,839.30

Finding the Fourth Proportional to 131,975.78, 198,095.49 and 72,839.30

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Solution

The fourth proportional to 131,975.78, 198,095.49 and 72,839.30 is: 109,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,975.78 : 198,095.49 = 72,839.30 : x
  2. Step 2: Convert to fraction form
    131,975.78/198,095.49 = 72,839.30/x
  3. Step 3: Cross multiply
    131,975.78x = 198,095.49 × 72,839.30
  4. Step 4: Simplify right side
    131,975.78x = 14,429,135,834.28
  5. Step 5: Solve for x
    x = 14,429,135,834.28/131,975.78
  6. Step 6: Final answer
    x = 109,331.70

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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.