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Finding the Fourth Proportional to 132,661.80, 198,992.88 and 109,239.12

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Solution

The fourth proportional to 132,661.80, 198,992.88 and 109,239.12 is: 163,858.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,661.80 : 198,992.88 = 109,239.12 : x
  2. Step 2: Convert to fraction form
    132,661.80/198,992.88 = 109,239.12/x
  3. Step 3: Cross multiply
    132,661.80x = 198,992.88 × 109,239.12
  4. Step 4: Simplify right side
    132,661.80x = 21,737,807,097.47
  5. Step 5: Solve for x
    x = 21,737,807,097.47/132,661.80
  6. Step 6: Final answer
    x = 163,858.83

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1.5x scale

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.