Home / 129,484.32-194,179.50-45,220.88

Finding the Fourth Proportional to 129,484.32, 194,179.50 and 45,220.88

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Solution

The fourth proportional to 129,484.32, 194,179.50 and 45,220.88 is: 67,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,484.32 : 194,179.50 = 45,220.88 : x
  2. Step 2: Convert to fraction form
    129,484.32/194,179.50 = 45,220.88/x
  3. Step 3: Cross multiply
    129,484.32x = 194,179.50 × 45,220.88
  4. Step 4: Simplify right side
    129,484.32x = 8,780,967,867.96
  5. Step 5: Solve for x
    x = 8,780,967,867.96/129,484.32
  6. Step 6: Final answer
    x = 67,814.91

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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.