Home / 129,416.12-194,170.90-45,188.70

Finding the Fourth Proportional to 129,416.12, 194,170.90 and 45,188.70

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Solution

The fourth proportional to 129,416.12, 194,170.90 and 45,188.70 is: 67,799.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,416.12 : 194,170.90 = 45,188.70 : x
  2. Step 2: Convert to fraction form
    129,416.12/194,170.90 = 45,188.70/x
  3. Step 3: Cross multiply
    129,416.12x = 194,170.90 × 45,188.70
  4. Step 4: Simplify right side
    129,416.12x = 8,774,330,435.86
  5. Step 5: Solve for x
    x = 8,774,330,435.86/129,416.12
  6. Step 6: Final answer
    x = 67,799.36

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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.