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Finding the Fourth Proportional to 154,379.16, 231,679.44 and 65,694.96

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Solution

The fourth proportional to 154,379.16, 231,679.44 and 65,694.96 is: 98,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,379.16 : 231,679.44 = 65,694.96 : x
  2. Step 2: Convert to fraction form
    154,379.16/231,679.44 = 65,694.96/x
  3. Step 3: Cross multiply
    154,379.16x = 231,679.44 × 65,694.96
  4. Step 4: Simplify right side
    154,379.16x = 15,220,171,543.62
  5. Step 5: Solve for x
    x = 15,220,171,543.62/154,379.16
  6. Step 6: Final answer
    x = 98,589.55

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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.