Home / 129,422.08-194,125.44-76,144

Finding the Fourth Proportional to 129,422.08, 194,125.44 and 76,144

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Solution

The fourth proportional to 129,422.08, 194,125.44 and 76,144 is: 114,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,422.08 : 194,125.44 = 76,144 : x
  2. Step 2: Convert to fraction form
    129,422.08/194,125.44 = 76,144/x
  3. Step 3: Cross multiply
    129,422.08x = 194,125.44 × 76,144
  4. Step 4: Simplify right side
    129,422.08x = 14,781,487,503.36
  5. Step 5: Solve for x
    x = 14,781,487,503.36/129,422.08
  6. Step 6: Final answer
    x = 114,211.48

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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.