Home / 89,723.53-134,363.70-66,872.59

Finding the Fourth Proportional to 89,723.53, 134,363.70 and 66,872.59

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Solution

The fourth proportional to 89,723.53, 134,363.70 and 66,872.59 is: 100,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,723.53 : 134,363.70 = 66,872.59 : x
  2. Step 2: Convert to fraction form
    89,723.53/134,363.70 = 66,872.59/x
  3. Step 3: Cross multiply
    89,723.53x = 134,363.70 × 66,872.59
  4. Step 4: Simplify right side
    89,723.53x = 8,985,248,620.98
  5. Step 5: Solve for x
    x = 8,985,248,620.98/89,723.53
  6. Step 6: Final answer
    x = 100,143.73

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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.