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Finding the Fourth Proportional to 132,893.80, 199,071.90 and 82,820.20

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Solution

The fourth proportional to 132,893.80, 199,071.90 and 82,820.20 is: 124,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,893.80 : 199,071.90 = 82,820.20 : x
  2. Step 2: Convert to fraction form
    132,893.80/199,071.90 = 82,820.20/x
  3. Step 3: Cross multiply
    132,893.80x = 199,071.90 × 82,820.20
  4. Step 4: Simplify right side
    132,893.80x = 16,487,174,572.38
  5. Step 5: Solve for x
    x = 16,487,174,572.38/132,893.80
  6. Step 6: Final answer
    x = 124,062.78

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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.