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Finding the Fourth Proportional to 129,808, 179,135.04 and 70,192

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Solution

The fourth proportional to 129,808, 179,135.04 and 70,192 is: 96,864.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,808 : 179,135.04 = 70,192 : x
  2. Step 2: Convert to fraction form
    129,808/179,135.04 = 70,192/x
  3. Step 3: Cross multiply
    129,808x = 179,135.04 × 70,192
  4. Step 4: Simplify right side
    129,808x = 12,573,846,727.68
  5. Step 5: Solve for x
    x = 12,573,846,727.68/129,808
  6. Step 6: Final answer
    x = 96,864.96

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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.