Home / 129,886.56-194,759.64-45,624.96

Finding the Fourth Proportional to 129,886.56, 194,759.64 and 45,624.96

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Solution

The fourth proportional to 129,886.56, 194,759.64 and 45,624.96 is: 68,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,886.56 : 194,759.64 = 45,624.96 : x
  2. Step 2: Convert to fraction form
    129,886.56/194,759.64 = 45,624.96/x
  3. Step 3: Cross multiply
    129,886.56x = 194,759.64 × 45,624.96
  4. Step 4: Simplify right side
    129,886.56x = 8,885,900,784.61
  5. Step 5: Solve for x
    x = 8,885,900,784.61/129,886.56
  6. Step 6: Final answer
    x = 68,412.78

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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.