Home / 132,083.10-198,209.70-72,961.20

Finding the Fourth Proportional to 132,083.10, 198,209.70 and 72,961.20

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Solution

The fourth proportional to 132,083.10, 198,209.70 and 72,961.20 is: 109,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,083.10 : 198,209.70 = 72,961.20 : x
  2. Step 2: Convert to fraction form
    132,083.10/198,209.70 = 72,961.20/x
  3. Step 3: Cross multiply
    132,083.10x = 198,209.70 × 72,961.20
  4. Step 4: Simplify right side
    132,083.10x = 14,461,617,563.64
  5. Step 5: Solve for x
    x = 14,461,617,563.64/132,083.10
  6. Step 6: Final answer
    x = 109,488.78

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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.