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Finding the Fourth Proportional to 156,494.78, 215,942.98 and 92,820.14

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Solution

The fourth proportional to 156,494.78, 215,942.98 and 92,820.14 is: 128,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,494.78 : 215,942.98 = 92,820.14 : x
  2. Step 2: Convert to fraction form
    156,494.78/215,942.98 = 92,820.14/x
  3. Step 3: Cross multiply
    156,494.78x = 215,942.98 × 92,820.14
  4. Step 4: Simplify right side
    156,494.78x = 20,043,857,635.62
  5. Step 5: Solve for x
    x = 20,043,857,635.62/156,494.78
  6. Step 6: Final answer
    x = 128,080.04

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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.