Home / 129,456.48-193,935.96-79,390.62

Finding the Fourth Proportional to 129,456.48, 193,935.96 and 79,390.62

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Solution

The fourth proportional to 129,456.48, 193,935.96 and 79,390.62 is: 118,933.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,456.48 : 193,935.96 = 79,390.62 : x
  2. Step 2: Convert to fraction form
    129,456.48/193,935.96 = 79,390.62/x
  3. Step 3: Cross multiply
    129,456.48x = 193,935.96 × 79,390.62
  4. Step 4: Simplify right side
    129,456.48x = 15,396,696,104.70
  5. Step 5: Solve for x
    x = 15,396,696,104.70/129,456.48
  6. Step 6: Final answer
    x = 118,933.38

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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.