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Finding the Fourth Proportional to 129,958.44, 179,343.18 and 70,342.44

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Solution

The fourth proportional to 129,958.44, 179,343.18 and 70,342.44 is: 97,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,958.44 : 179,343.18 = 70,342.44 : x
  2. Step 2: Convert to fraction form
    129,958.44/179,343.18 = 70,342.44/x
  3. Step 3: Cross multiply
    129,958.44x = 179,343.18 × 70,342.44
  4. Step 4: Simplify right side
    129,958.44x = 12,615,436,878.56
  5. Step 5: Solve for x
    x = 12,615,436,878.56/129,958.44
  6. Step 6: Final answer
    x = 97,072.86

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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.