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Finding the Fourth Proportional to 156,334, 215,740.92 and 84,713.44

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Solution

The fourth proportional to 156,334, 215,740.92 and 84,713.44 is: 116,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,334 : 215,740.92 = 84,713.44 : x
  2. Step 2: Convert to fraction form
    156,334/215,740.92 = 84,713.44/x
  3. Step 3: Cross multiply
    156,334x = 215,740.92 × 84,713.44
  4. Step 4: Simplify right side
    156,334x = 18,276,155,481.96
  5. Step 5: Solve for x
    x = 18,276,155,481.96/156,334
  6. Step 6: Final answer
    x = 116,904.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.