Home / 128,191.60-192,287.40-57,114.10

Finding the Fourth Proportional to 128,191.60, 192,287.40 and 57,114.10

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Solution

The fourth proportional to 128,191.60, 192,287.40 and 57,114.10 is: 85,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,191.60 : 192,287.40 = 57,114.10 : x
  2. Step 2: Convert to fraction form
    128,191.60/192,287.40 = 57,114.10/x
  3. Step 3: Cross multiply
    128,191.60x = 192,287.40 × 57,114.10
  4. Step 4: Simplify right side
    128,191.60x = 10,982,321,792.34
  5. Step 5: Solve for x
    x = 10,982,321,792.34/128,191.60
  6. Step 6: Final answer
    x = 85,671.15

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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.