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Finding the Fourth Proportional to 129,779, 179,095.06 and 70,163

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Solution

The fourth proportional to 129,779, 179,095.06 and 70,163 is: 96,824.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,779 : 179,095.06 = 70,163 : x
  2. Step 2: Convert to fraction form
    129,779/179,095.06 = 70,163/x
  3. Step 3: Cross multiply
    129,779x = 179,095.06 × 70,163
  4. Step 4: Simplify right side
    129,779x = 12,565,846,694.78
  5. Step 5: Solve for x
    x = 12,565,846,694.78/129,779
  6. Step 6: Final answer
    x = 96,824.96

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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.