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Finding the Fourth Proportional to 89,122.05, 132,992.09 and 79,657.80

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Solution

The fourth proportional to 89,122.05, 132,992.09 and 79,657.80 is: 118,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,122.05 : 132,992.09 = 79,657.80 : x
  2. Step 2: Convert to fraction form
    89,122.05/132,992.09 = 79,657.80/x
  3. Step 3: Cross multiply
    89,122.05x = 132,992.09 × 79,657.80
  4. Step 4: Simplify right side
    89,122.05x = 10,593,857,942.65
  5. Step 5: Solve for x
    x = 10,593,857,942.65/89,122.05
  6. Step 6: Final answer
    x = 118,869.10

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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.