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Finding the Fourth Proportional to 158,468.22, 218,687.82 and 86,846.67

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Solution

The fourth proportional to 158,468.22, 218,687.82 and 86,846.67 is: 119,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,468.22 : 218,687.82 = 86,846.67 : x
  2. Step 2: Convert to fraction form
    158,468.22/218,687.82 = 86,846.67/x
  3. Step 3: Cross multiply
    158,468.22x = 218,687.82 × 86,846.67
  4. Step 4: Simplify right side
    158,468.22x = 18,992,308,936.56
  5. Step 5: Solve for x
    x = 18,992,308,936.56/158,468.22
  6. Step 6: Final answer
    x = 119,849.32

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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.