Home / 129,815.70-194,778.23-70,693.80

Finding the Fourth Proportional to 129,815.70, 194,778.23 and 70,693.80

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Solution

The fourth proportional to 129,815.70, 194,778.23 and 70,693.80 is: 106,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.70 : 194,778.23 = 70,693.80 : x
  2. Step 2: Convert to fraction form
    129,815.70/194,778.23 = 70,693.80/x
  3. Step 3: Cross multiply
    129,815.70x = 194,778.23 × 70,693.80
  4. Step 4: Simplify right side
    129,815.70x = 13,769,613,235.97
  5. Step 5: Solve for x
    x = 13,769,613,235.97/129,815.70
  6. Step 6: Final answer
    x = 106,070.48

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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.