Home / 205,310.92-283,231.62-128,792.20

Finding the Fourth Proportional to 205,310.92, 283,231.62 and 128,792.20

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Solution

The fourth proportional to 205,310.92, 283,231.62 and 128,792.20 is: 177,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,310.92 : 283,231.62 = 128,792.20 : x
  2. Step 2: Convert to fraction form
    205,310.92/283,231.62 = 128,792.20/x
  3. Step 3: Cross multiply
    205,310.92x = 283,231.62 × 128,792.20
  4. Step 4: Simplify right side
    205,310.92x = 36,478,023,449.36
  5. Step 5: Solve for x
    x = 36,478,023,449.36/205,310.92
  6. Step 6: Final answer
    x = 177,672.11

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1.5x scale

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.