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Finding the Fourth Proportional to 129,064.50, 193,604.04 and 45,958.50

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Solution

The fourth proportional to 129,064.50, 193,604.04 and 45,958.50 is: 68,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,064.50 : 193,604.04 = 45,958.50 : x
  2. Step 2: Convert to fraction form
    129,064.50/193,604.04 = 45,958.50/x
  3. Step 3: Cross multiply
    129,064.50x = 193,604.04 × 45,958.50
  4. Step 4: Simplify right side
    129,064.50x = 8,897,751,272.34
  5. Step 5: Solve for x
    x = 8,897,751,272.34/129,064.50
  6. Step 6: Final answer
    x = 68,940.35

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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.