Home / 80,968.09-120,638.03-76,441

Finding the Fourth Proportional to 80,968.09, 120,638.03 and 76,441

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Solution

The fourth proportional to 80,968.09, 120,638.03 and 76,441 is: 113,892.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,968.09 : 120,638.03 = 76,441 : x
  2. Step 2: Convert to fraction form
    80,968.09/120,638.03 = 76,441/x
  3. Step 3: Cross multiply
    80,968.09x = 120,638.03 × 76,441
  4. Step 4: Simplify right side
    80,968.09x = 9,221,691,651.23
  5. Step 5: Solve for x
    x = 9,221,691,651.23/80,968.09
  6. Step 6: Final answer
    x = 113,892.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.