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Finding the Fourth Proportional to 129,369.14, 194,061.90 and 40,626.14

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Solution

The fourth proportional to 129,369.14, 194,061.90 and 40,626.14 is: 60,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.14 : 194,061.90 = 40,626.14 : x
  2. Step 2: Convert to fraction form
    129,369.14/194,061.90 = 40,626.14/x
  3. Step 3: Cross multiply
    129,369.14x = 194,061.90 × 40,626.14
  4. Step 4: Simplify right side
    129,369.14x = 7,883,985,918.07
  5. Step 5: Solve for x
    x = 7,883,985,918.07/129,369.14
  6. Step 6: Final answer
    x = 60,941.78

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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.