Home / 129,990.42-195,057.72-63,431.10

Finding the Fourth Proportional to 129,990.42, 195,057.72 and 63,431.10

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Solution

The fourth proportional to 129,990.42, 195,057.72 and 63,431.10 is: 95,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,990.42 : 195,057.72 = 63,431.10 : x
  2. Step 2: Convert to fraction form
    129,990.42/195,057.72 = 63,431.10/x
  3. Step 3: Cross multiply
    129,990.42x = 195,057.72 × 63,431.10
  4. Step 4: Simplify right side
    129,990.42x = 12,372,725,743.09
  5. Step 5: Solve for x
    x = 12,372,725,743.09/129,990.42
  6. Step 6: Final answer
    x = 95,181.83

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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.