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Finding the Fourth Proportional to 168,215.78, 252,346.88 and 61,585.76

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Solution

The fourth proportional to 168,215.78, 252,346.88 and 61,585.76 is: 92,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,215.78 : 252,346.88 = 61,585.76 : x
  2. Step 2: Convert to fraction form
    168,215.78/252,346.88 = 61,585.76/x
  3. Step 3: Cross multiply
    168,215.78x = 252,346.88 × 61,585.76
  4. Step 4: Simplify right side
    168,215.78x = 15,540,973,280.66
  5. Step 5: Solve for x
    x = 15,540,973,280.66/168,215.78
  6. Step 6: Final answer
    x = 92,387.13

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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.