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Finding the Fourth Proportional to 129,959.24, 179,344.02 and 70,343.24

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Solution

The fourth proportional to 129,959.24, 179,344.02 and 70,343.24 is: 97,073.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,959.24 : 179,344.02 = 70,343.24 : x
  2. Step 2: Convert to fraction form
    129,959.24/179,344.02 = 70,343.24/x
  3. Step 3: Cross multiply
    129,959.24x = 179,344.02 × 70,343.24
  4. Step 4: Simplify right side
    129,959.24x = 12,615,639,441.42
  5. Step 5: Solve for x
    x = 12,615,639,441.42/129,959.24
  6. Step 6: Final answer
    x = 97,073.82

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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.