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Finding the Fourth Proportional to 129,995.52, 194,576.64 and 69,939.84

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Solution

The fourth proportional to 129,995.52, 194,576.64 and 69,939.84 is: 104,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,995.52 : 194,576.64 = 69,939.84 : x
  2. Step 2: Convert to fraction form
    129,995.52/194,576.64 = 69,939.84/x
  3. Step 3: Cross multiply
    129,995.52x = 194,576.64 × 69,939.84
  4. Step 4: Simplify right side
    129,995.52x = 13,608,659,069.34
  5. Step 5: Solve for x
    x = 13,608,659,069.34/129,995.52
  6. Step 6: Final answer
    x = 104,685.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.