Home / 128,540.10-193,040.55-93,519.30

Finding the Fourth Proportional to 128,540.10, 193,040.55 and 93,519.30

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Solution

The fourth proportional to 128,540.10, 193,040.55 and 93,519.30 is: 140,446.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,540.10 : 193,040.55 = 93,519.30 : x
  2. Step 2: Convert to fraction form
    128,540.10/193,040.55 = 93,519.30/x
  3. Step 3: Cross multiply
    128,540.10x = 193,040.55 × 93,519.30
  4. Step 4: Simplify right side
    128,540.10x = 18,053,017,107.62
  5. Step 5: Solve for x
    x = 18,053,017,107.62/128,540.10
  6. Step 6: Final answer
    x = 140,446.58

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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.