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Finding the Fourth Proportional to 80,352.90, 120,410.56 and 75,859.65

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Solution

The fourth proportional to 80,352.90, 120,410.56 and 75,859.65 is: 113,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,352.90 : 120,410.56 = 75,859.65 : x
  2. Step 2: Convert to fraction form
    80,352.90/120,410.56 = 75,859.65/x
  3. Step 3: Cross multiply
    80,352.90x = 120,410.56 × 75,859.65
  4. Step 4: Simplify right side
    80,352.90x = 9,134,302,937.90
  5. Step 5: Solve for x
    x = 9,134,302,937.90/80,352.90
  6. Step 6: Final answer
    x = 113,677.33

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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.