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Finding the Fourth Proportional to 144,791.70, 217,209.15 and 51,290.10

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Solution

The fourth proportional to 144,791.70, 217,209.15 and 51,290.10 is: 76,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,791.70 : 217,209.15 = 51,290.10 : x
  2. Step 2: Convert to fraction form
    144,791.70/217,209.15 = 51,290.10/x
  3. Step 3: Cross multiply
    144,791.70x = 217,209.15 × 51,290.10
  4. Step 4: Simplify right side
    144,791.70x = 11,140,679,024.42
  5. Step 5: Solve for x
    x = 11,140,679,024.42/144,791.70
  6. Step 6: Final answer
    x = 76,942.80

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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.