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Finding the Fourth Proportional to 148,081.76, 204,352.96 and 81,013.76

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Solution

The fourth proportional to 148,081.76, 204,352.96 and 81,013.76 is: 111,799.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,081.76 : 204,352.96 = 81,013.76 : x
  2. Step 2: Convert to fraction form
    148,081.76/204,352.96 = 81,013.76/x
  3. Step 3: Cross multiply
    148,081.76x = 204,352.96 × 81,013.76
  4. Step 4: Simplify right side
    148,081.76x = 16,555,401,656.73
  5. Step 5: Solve for x
    x = 16,555,401,656.73/148,081.76
  6. Step 6: Final answer
    x = 111,799.06

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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.