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Finding the Fourth Proportional to 154,418.44, 231,661.66 and 87,889.88

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Solution

The fourth proportional to 154,418.44, 231,661.66 and 87,889.88 is: 131,854.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,418.44 : 231,661.66 = 87,889.88 : x
  2. Step 2: Convert to fraction form
    154,418.44/231,661.66 = 87,889.88/x
  3. Step 3: Cross multiply
    154,418.44x = 231,661.66 × 87,889.88
  4. Step 4: Simplify right side
    154,418.44x = 20,360,715,498.00
  5. Step 5: Solve for x
    x = 20,360,715,498.00/154,418.44
  6. Step 6: Final answer
    x = 131,854.17

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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.