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Finding the Fourth Proportional to 143,514.84, 215,272.74 and 69,591

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Solution

The fourth proportional to 143,514.84, 215,272.74 and 69,591 is: 104,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,514.84 : 215,272.74 = 69,591 : x
  2. Step 2: Convert to fraction form
    143,514.84/215,272.74 = 69,591/x
  3. Step 3: Cross multiply
    143,514.84x = 215,272.74 × 69,591
  4. Step 4: Simplify right side
    143,514.84x = 14,981,045,249.34
  5. Step 5: Solve for x
    x = 14,981,045,249.34/143,514.84
  6. Step 6: Final answer
    x = 104,386.73

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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.