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Finding the Fourth Proportional to 154,291.92, 231,138.99 and 87,530.10

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Solution

The fourth proportional to 154,291.92, 231,138.99 and 87,530.10 is: 131,125.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,291.92 : 231,138.99 = 87,530.10 : x
  2. Step 2: Convert to fraction form
    154,291.92/231,138.99 = 87,530.10/x
  3. Step 3: Cross multiply
    154,291.92x = 231,138.99 × 87,530.10
  4. Step 4: Simplify right side
    154,291.92x = 20,231,618,908.60
  5. Step 5: Solve for x
    x = 20,231,618,908.60/154,291.92
  6. Step 6: Final answer
    x = 131,125.59

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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.