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Finding the Fourth Proportional to 129,750.94, 194,654.64 and 39,793.69

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Solution

The fourth proportional to 129,750.94, 194,654.64 and 39,793.69 is: 59,699.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,750.94 : 194,654.64 = 39,793.69 : x
  2. Step 2: Convert to fraction form
    129,750.94/194,654.64 = 39,793.69/x
  3. Step 3: Cross multiply
    129,750.94x = 194,654.64 × 39,793.69
  4. Step 4: Simplify right side
    129,750.94x = 7,746,026,401.22
  5. Step 5: Solve for x
    x = 7,746,026,401.22/129,750.94
  6. Step 6: Final answer
    x = 59,699.19

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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.