Home / 128,188.28-192,304.58-57,136.20

Finding the Fourth Proportional to 128,188.28, 192,304.58 and 57,136.20

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Solution

The fourth proportional to 128,188.28, 192,304.58 and 57,136.20 is: 85,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,188.28 : 192,304.58 = 57,136.20 : x
  2. Step 2: Convert to fraction form
    128,188.28/192,304.58 = 57,136.20/x
  3. Step 3: Cross multiply
    128,188.28x = 192,304.58 × 57,136.20
  4. Step 4: Simplify right side
    128,188.28x = 10,987,552,943.80
  5. Step 5: Solve for x
    x = 10,987,552,943.80/128,188.28
  6. Step 6: Final answer
    x = 85,714.18

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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.