Home / 132,972.60-199,458.90-54,143.40

Finding the Fourth Proportional to 132,972.60, 199,458.90 and 54,143.40

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Solution

The fourth proportional to 132,972.60, 199,458.90 and 54,143.40 is: 81,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,972.60 : 199,458.90 = 54,143.40 : x
  2. Step 2: Convert to fraction form
    132,972.60/199,458.90 = 54,143.40/x
  3. Step 3: Cross multiply
    132,972.60x = 199,458.90 × 54,143.40
  4. Step 4: Simplify right side
    132,972.60x = 10,799,383,006.26
  5. Step 5: Solve for x
    x = 10,799,383,006.26/132,972.60
  6. Step 6: Final answer
    x = 81,215.10

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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.