Home / 129,412.62-193,870.14-79,346.70

Finding the Fourth Proportional to 129,412.62, 193,870.14 and 79,346.70

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Solution

The fourth proportional to 129,412.62, 193,870.14 and 79,346.70 is: 118,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,412.62 : 193,870.14 = 79,346.70 : x
  2. Step 2: Convert to fraction form
    129,412.62/193,870.14 = 79,346.70/x
  3. Step 3: Cross multiply
    129,412.62x = 193,870.14 × 79,346.70
  4. Step 4: Simplify right side
    129,412.62x = 15,382,955,837.54
  5. Step 5: Solve for x
    x = 15,382,955,837.54/129,412.62
  6. Step 6: Final answer
    x = 118,867.51

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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.