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Finding the Fourth Proportional to 143,866.48, 215,801.72 and 55,124.48

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Solution

The fourth proportional to 143,866.48, 215,801.72 and 55,124.48 is: 82,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,866.48 : 215,801.72 = 55,124.48 : x
  2. Step 2: Convert to fraction form
    143,866.48/215,801.72 = 55,124.48/x
  3. Step 3: Cross multiply
    143,866.48x = 215,801.72 × 55,124.48
  4. Step 4: Simplify right side
    143,866.48x = 11,895,957,598.11
  5. Step 5: Solve for x
    x = 11,895,957,598.11/143,866.48
  6. Step 6: Final answer
    x = 82,687.49

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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.