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Finding the Fourth Proportional to 148,273.20, 204,616.80 and 81,205.20

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Solution

The fourth proportional to 148,273.20, 204,616.80 and 81,205.20 is: 112,063.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,273.20 : 204,616.80 = 81,205.20 : x
  2. Step 2: Convert to fraction form
    148,273.20/204,616.80 = 81,205.20/x
  3. Step 3: Cross multiply
    148,273.20x = 204,616.80 × 81,205.20
  4. Step 4: Simplify right side
    148,273.20x = 16,615,948,167.36
  5. Step 5: Solve for x
    x = 16,615,948,167.36/148,273.20
  6. Step 6: Final answer
    x = 112,063.06

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1.5x scale

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.