Home / 129,415.80-194,170.42-45,188.38

Finding the Fourth Proportional to 129,415.80, 194,170.42 and 45,188.38

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Solution

The fourth proportional to 129,415.80, 194,170.42 and 45,188.38 is: 67,798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,415.80 : 194,170.42 = 45,188.38 : x
  2. Step 2: Convert to fraction form
    129,415.80/194,170.42 = 45,188.38/x
  3. Step 3: Cross multiply
    129,415.80x = 194,170.42 × 45,188.38
  4. Step 4: Simplify right side
    129,415.80x = 8,774,246,723.72
  5. Step 5: Solve for x
    x = 8,774,246,723.72/129,415.80
  6. Step 6: Final answer
    x = 67,798.88

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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.