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Finding the Fourth Proportional to 129,834, 179,170.92 and 70,218

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Solution

The fourth proportional to 129,834, 179,170.92 and 70,218 is: 96,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,834 : 179,170.92 = 70,218 : x
  2. Step 2: Convert to fraction form
    129,834/179,170.92 = 70,218/x
  3. Step 3: Cross multiply
    129,834x = 179,170.92 × 70,218
  4. Step 4: Simplify right side
    129,834x = 12,581,023,660.56
  5. Step 5: Solve for x
    x = 12,581,023,660.56/129,834
  6. Step 6: Final answer
    x = 96,900.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.