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Finding the Fourth Proportional to 144,063.94, 198,775.20 and 86,687.86

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Solution

The fourth proportional to 144,063.94, 198,775.20 and 86,687.86 is: 119,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,063.94 : 198,775.20 = 86,687.86 : x
  2. Step 2: Convert to fraction form
    144,063.94/198,775.20 = 86,687.86/x
  3. Step 3: Cross multiply
    144,063.94x = 198,775.20 × 86,687.86
  4. Step 4: Simplify right side
    144,063.94x = 17,231,396,709.07
  5. Step 5: Solve for x
    x = 17,231,396,709.07/144,063.94
  6. Step 6: Final answer
    x = 119,609.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.