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Finding the Fourth Proportional to 129,241.80, 193,863.02 and 39,285.34

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Solution

The fourth proportional to 129,241.80, 193,863.02 and 39,285.34 is: 58,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,241.80 : 193,863.02 = 39,285.34 : x
  2. Step 2: Convert to fraction form
    129,241.80/193,863.02 = 39,285.34/x
  3. Step 3: Cross multiply
    129,241.80x = 193,863.02 × 39,285.34
  4. Step 4: Simplify right side
    129,241.80x = 7,615,973,973.04
  5. Step 5: Solve for x
    x = 7,615,973,973.04/129,241.80
  6. Step 6: Final answer
    x = 58,928.10

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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.