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Finding the Fourth Proportional to 129,703.60, 194,411.40 and 50,791.60

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Solution

The fourth proportional to 129,703.60, 194,411.40 and 50,791.60 is: 76,131.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,703.60 : 194,411.40 = 50,791.60 : x
  2. Step 2: Convert to fraction form
    129,703.60/194,411.40 = 50,791.60/x
  3. Step 3: Cross multiply
    129,703.60x = 194,411.40 × 50,791.60
  4. Step 4: Simplify right side
    129,703.60x = 9,874,466,064.24
  5. Step 5: Solve for x
    x = 9,874,466,064.24/129,703.60
  6. Step 6: Final answer
    x = 76,131.01

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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.