Home / 146,778.20-219,908.10-120,339.80

Finding the Fourth Proportional to 146,778.20, 219,908.10 and 120,339.80

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Solution

The fourth proportional to 146,778.20, 219,908.10 and 120,339.80 is: 180,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,778.20 : 219,908.10 = 120,339.80 : x
  2. Step 2: Convert to fraction form
    146,778.20/219,908.10 = 120,339.80/x
  3. Step 3: Cross multiply
    146,778.20x = 219,908.10 × 120,339.80
  4. Step 4: Simplify right side
    146,778.20x = 26,463,696,772.38
  5. Step 5: Solve for x
    x = 26,463,696,772.38/146,778.20
  6. Step 6: Final answer
    x = 180,297.19

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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.