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Finding the Fourth Proportional to 144,919.72, 217,599.90 and 137,791.72

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Solution

The fourth proportional to 144,919.72, 217,599.90 and 137,791.72 is: 206,897.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,919.72 : 217,599.90 = 137,791.72 : x
  2. Step 2: Convert to fraction form
    144,919.72/217,599.90 = 137,791.72/x
  3. Step 3: Cross multiply
    144,919.72x = 217,599.90 × 137,791.72
  4. Step 4: Simplify right side
    144,919.72x = 29,983,464,492.83
  5. Step 5: Solve for x
    x = 29,983,464,492.83/144,919.72
  6. Step 6: Final answer
    x = 206,897.06

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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.