Home / 80,203.86-120,180.96-30,256.65

Finding the Fourth Proportional to 80,203.86, 120,180.96 and 30,256.65

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Solution

The fourth proportional to 80,203.86, 120,180.96 and 30,256.65 is: 45,337.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,203.86 : 120,180.96 = 30,256.65 : x
  2. Step 2: Convert to fraction form
    80,203.86/120,180.96 = 30,256.65/x
  3. Step 3: Cross multiply
    80,203.86x = 120,180.96 × 30,256.65
  4. Step 4: Simplify right side
    80,203.86x = 3,636,273,243.38
  5. Step 5: Solve for x
    x = 3,636,273,243.38/80,203.86
  6. Step 6: Final answer
    x = 45,337.88

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1.5x scale

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.