Home / 143,838.52-198,503.88-80,176.78

Finding the Fourth Proportional to 143,838.52, 198,503.88 and 80,176.78

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Solution

The fourth proportional to 143,838.52, 198,503.88 and 80,176.78 is: 110,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,838.52 : 198,503.88 = 80,176.78 : x
  2. Step 2: Convert to fraction form
    143,838.52/198,503.88 = 80,176.78/x
  3. Step 3: Cross multiply
    143,838.52x = 198,503.88 × 80,176.78
  4. Step 4: Simplify right side
    143,838.52x = 15,915,401,915.91
  5. Step 5: Solve for x
    x = 15,915,401,915.91/143,838.52
  6. Step 6: Final answer
    x = 110,647.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.