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Finding the Fourth Proportional to 154,459.56, 231,723.30 and 87,930.84

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Solution

The fourth proportional to 154,459.56, 231,723.30 and 87,930.84 is: 131,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,459.56 : 231,723.30 = 87,930.84 : x
  2. Step 2: Convert to fraction form
    154,459.56/231,723.30 = 87,930.84/x
  3. Step 3: Cross multiply
    154,459.56x = 231,723.30 × 87,930.84
  4. Step 4: Simplify right side
    154,459.56x = 20,375,624,416.57
  5. Step 5: Solve for x
    x = 20,375,624,416.57/154,459.56
  6. Step 6: Final answer
    x = 131,915.59

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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.