Home / 129,408.48-194,126.76-40,664.88

Finding the Fourth Proportional to 129,408.48, 194,126.76 and 40,664.88

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Solution

The fourth proportional to 129,408.48, 194,126.76 and 40,664.88 is: 61,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,408.48 : 194,126.76 = 40,664.88 : x
  2. Step 2: Convert to fraction form
    129,408.48/194,126.76 = 40,664.88/x
  3. Step 3: Cross multiply
    129,408.48x = 194,126.76 × 40,664.88
  4. Step 4: Simplify right side
    129,408.48x = 7,894,141,400.19
  5. Step 5: Solve for x
    x = 7,894,141,400.19/129,408.48
  6. Step 6: Final answer
    x = 61,001.73

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1.5x scale

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.