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Finding the Fourth Proportional to 89,135.52, 133,092.12 and 75,981.12

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Solution

The fourth proportional to 89,135.52, 133,092.12 and 75,981.12 is: 113,450.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,135.52 : 133,092.12 = 75,981.12 : x
  2. Step 2: Convert to fraction form
    89,135.52/133,092.12 = 75,981.12/x
  3. Step 3: Cross multiply
    89,135.52x = 133,092.12 × 75,981.12
  4. Step 4: Simplify right side
    89,135.52x = 10,112,488,340.77
  5. Step 5: Solve for x
    x = 10,112,488,340.77/89,135.52
  6. Step 6: Final answer
    x = 113,450.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.