Home / 120,631.78-180,920.13-45,760.24

Finding the Fourth Proportional to 120,631.78, 180,920.13 and 45,760.24

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Solution

The fourth proportional to 120,631.78, 180,920.13 and 45,760.24 is: 68,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.78 : 180,920.13 = 45,760.24 : x
  2. Step 2: Convert to fraction form
    120,631.78/180,920.13 = 45,760.24/x
  3. Step 3: Cross multiply
    120,631.78x = 180,920.13 × 45,760.24
  4. Step 4: Simplify right side
    120,631.78x = 8,278,948,569.63
  5. Step 5: Solve for x
    x = 8,278,948,569.63/120,631.78
  6. Step 6: Final answer
    x = 68,629.91

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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.