Home / 140,778.50-194,274.33-77,116.55

Finding the Fourth Proportional to 140,778.50, 194,274.33 and 77,116.55

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Solution

The fourth proportional to 140,778.50, 194,274.33 and 77,116.55 is: 106,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.50 : 194,274.33 = 77,116.55 : x
  2. Step 2: Convert to fraction form
    140,778.50/194,274.33 = 77,116.55/x
  3. Step 3: Cross multiply
    140,778.50x = 194,274.33 × 77,116.55
  4. Step 4: Simplify right side
    140,778.50x = 14,981,766,083.16
  5. Step 5: Solve for x
    x = 14,981,766,083.16/140,778.50
  6. Step 6: Final answer
    x = 106,420.84

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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.