Home / 127,815.10-191,720.85-57,694.30

Finding the Fourth Proportional to 127,815.10, 191,720.85 and 57,694.30

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Solution

The fourth proportional to 127,815.10, 191,720.85 and 57,694.30 is: 86,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,815.10 : 191,720.85 = 57,694.30 : x
  2. Step 2: Convert to fraction form
    127,815.10/191,720.85 = 57,694.30/x
  3. Step 3: Cross multiply
    127,815.10x = 191,720.85 × 57,694.30
  4. Step 4: Simplify right side
    127,815.10x = 11,061,200,236.16
  5. Step 5: Solve for x
    x = 11,061,200,236.16/127,815.10
  6. Step 6: Final answer
    x = 86,540.64

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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.