Home / 128,408.10-192,842.55-93,387.30

Finding the Fourth Proportional to 128,408.10, 192,842.55 and 93,387.30

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Solution

The fourth proportional to 128,408.10, 192,842.55 and 93,387.30 is: 140,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,408.10 : 192,842.55 = 93,387.30 : x
  2. Step 2: Convert to fraction form
    128,408.10/192,842.55 = 93,387.30/x
  3. Step 3: Cross multiply
    128,408.10x = 192,842.55 × 93,387.30
  4. Step 4: Simplify right side
    128,408.10x = 18,009,045,069.62
  5. Step 5: Solve for x
    x = 18,009,045,069.62/128,408.10
  6. Step 6: Final answer
    x = 140,248.51

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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.