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Finding the Fourth Proportional to 154,281.78, 231,514.62 and 68,886

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Solution

The fourth proportional to 154,281.78, 231,514.62 and 68,886 is: 103,370.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,281.78 : 231,514.62 = 68,886 : x
  2. Step 2: Convert to fraction form
    154,281.78/231,514.62 = 68,886/x
  3. Step 3: Cross multiply
    154,281.78x = 231,514.62 × 68,886
  4. Step 4: Simplify right side
    154,281.78x = 15,948,116,113.32
  5. Step 5: Solve for x
    x = 15,948,116,113.32/154,281.78
  6. Step 6: Final answer
    x = 103,370.06

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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.