Home / 89,834.90-134,493.15-80,503.70

Finding the Fourth Proportional to 89,834.90, 134,493.15 and 80,503.70

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Solution

The fourth proportional to 89,834.90, 134,493.15 and 80,503.70 is: 120,523.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,834.90 : 134,493.15 = 80,503.70 : x
  2. Step 2: Convert to fraction form
    89,834.90/134,493.15 = 80,503.70/x
  3. Step 3: Cross multiply
    89,834.90x = 134,493.15 × 80,503.70
  4. Step 4: Simplify right side
    89,834.90x = 10,827,196,199.66
  5. Step 5: Solve for x
    x = 10,827,196,199.66/89,834.90
  6. Step 6: Final answer
    x = 120,523.27

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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.