Home / 92,764.71-139,144.33-80,247.78

Finding the Fourth Proportional to 92,764.71, 139,144.33 and 80,247.78

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Solution

The fourth proportional to 92,764.71, 139,144.33 and 80,247.78 is: 120,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,764.71 : 139,144.33 = 80,247.78 : x
  2. Step 2: Convert to fraction form
    92,764.71/139,144.33 = 80,247.78/x
  3. Step 3: Cross multiply
    92,764.71x = 139,144.33 × 80,247.78
  4. Step 4: Simplify right side
    92,764.71x = 11,166,023,582.09
  5. Step 5: Solve for x
    x = 11,166,023,582.09/92,764.71
  6. Step 6: Final answer
    x = 120,369.30

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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.