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Finding the Fourth Proportional to 132,420, 198,631.82 and 73,371

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Solution

The fourth proportional to 132,420, 198,631.82 and 73,371 is: 110,057.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,420 : 198,631.82 = 73,371 : x
  2. Step 2: Convert to fraction form
    132,420/198,631.82 = 73,371/x
  3. Step 3: Cross multiply
    132,420x = 198,631.82 × 73,371
  4. Step 4: Simplify right side
    132,420x = 14,573,815,265.22
  5. Step 5: Solve for x
    x = 14,573,815,265.22/132,420
  6. Step 6: Final answer
    x = 110,057.51

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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.