Home / 224,169.12-309,371.90-128,694.24

Finding the Fourth Proportional to 224,169.12, 309,371.90 and 128,694.24

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Solution

The fourth proportional to 224,169.12, 309,371.90 and 128,694.24 is: 177,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,169.12 : 309,371.90 = 128,694.24 : x
  2. Step 2: Convert to fraction form
    224,169.12/309,371.90 = 128,694.24/x
  3. Step 3: Cross multiply
    224,169.12x = 309,371.90 × 128,694.24
  4. Step 4: Simplify right side
    224,169.12x = 39,814,380,904.38
  5. Step 5: Solve for x
    x = 39,814,380,904.38/224,169.12
  6. Step 6: Final answer
    x = 177,608.68

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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.