Home / 89,943.90-134,766.99-80,672.28

Finding the Fourth Proportional to 89,943.90, 134,766.99 and 80,672.28

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Solution

The fourth proportional to 89,943.90, 134,766.99 and 80,672.28 is: 120,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,943.90 : 134,766.99 = 80,672.28 : x
  2. Step 2: Convert to fraction form
    89,943.90/134,766.99 = 80,672.28/x
  3. Step 3: Cross multiply
    89,943.90x = 134,766.99 × 80,672.28
  4. Step 4: Simplify right side
    89,943.90x = 10,871,960,352.04
  5. Step 5: Solve for x
    x = 10,871,960,352.04/89,943.90
  6. Step 6: Final answer
    x = 120,874.90

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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.