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Finding the Fourth Proportional to 129,866.40, 194,659.68 and 63,351.36

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Solution

The fourth proportional to 129,866.40, 194,659.68 and 63,351.36 is: 94,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,866.40 : 194,659.68 = 63,351.36 : x
  2. Step 2: Convert to fraction form
    129,866.40/194,659.68 = 63,351.36/x
  3. Step 3: Cross multiply
    129,866.40x = 194,659.68 × 63,351.36
  4. Step 4: Simplify right side
    129,866.40x = 12,331,955,465.16
  5. Step 5: Solve for x
    x = 12,331,955,465.16/129,866.40
  6. Step 6: Final answer
    x = 94,958.78

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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.