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Finding the Fourth Proportional to 129,958.50, 179,343.27 and 70,342.50

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Solution

The fourth proportional to 129,958.50, 179,343.27 and 70,342.50 is: 97,072.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,958.50 : 179,343.27 = 70,342.50 : x
  2. Step 2: Convert to fraction form
    129,958.50/179,343.27 = 70,342.50/x
  3. Step 3: Cross multiply
    129,958.50x = 179,343.27 × 70,342.50
  4. Step 4: Simplify right side
    129,958.50x = 12,615,453,969.98
  5. Step 5: Solve for x
    x = 12,615,453,969.98/129,958.50
  6. Step 6: Final answer
    x = 97,072.94

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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.