Home / 80,348.09-120,403.34-75,854.84

Finding the Fourth Proportional to 80,348.09, 120,403.34 and 75,854.84

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Solution

The fourth proportional to 80,348.09, 120,403.34 and 75,854.84 is: 113,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,348.09 : 120,403.34 = 75,854.84 : x
  2. Step 2: Convert to fraction form
    80,348.09/120,403.34 = 75,854.84/x
  3. Step 3: Cross multiply
    80,348.09x = 120,403.34 × 75,854.84
  4. Step 4: Simplify right side
    80,348.09x = 9,133,175,821.01
  5. Step 5: Solve for x
    x = 9,133,175,821.01/80,348.09
  6. Step 6: Final answer
    x = 113,670.11

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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.