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Finding the Fourth Proportional to 129,799, 179,123.16 and 70,183

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Solution

The fourth proportional to 129,799, 179,123.16 and 70,183 is: 96,852.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,799 : 179,123.16 = 70,183 : x
  2. Step 2: Convert to fraction form
    129,799/179,123.16 = 70,183/x
  3. Step 3: Cross multiply
    129,799x = 179,123.16 × 70,183
  4. Step 4: Simplify right side
    129,799x = 12,571,400,738.28
  5. Step 5: Solve for x
    x = 12,571,400,738.28/129,799
  6. Step 6: Final answer
    x = 96,852.83

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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.