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Finding the Fourth Proportional to 143,878.58, 215,791.74 and 38,672.94

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Solution

The fourth proportional to 143,878.58, 215,791.74 and 38,672.94 is: 58,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,878.58 : 215,791.74 = 38,672.94 : x
  2. Step 2: Convert to fraction form
    143,878.58/215,791.74 = 38,672.94/x
  3. Step 3: Cross multiply
    143,878.58x = 215,791.74 × 38,672.94
  4. Step 4: Simplify right side
    143,878.58x = 8,345,301,013.52
  5. Step 5: Solve for x
    x = 8,345,301,013.52/143,878.58
  6. Step 6: Final answer
    x = 58,002.39

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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.