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Finding the Fourth Proportional to 158,591.25, 218,835.81 and 86,952.42

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Solution

The fourth proportional to 158,591.25, 218,835.81 and 86,952.42 is: 119,983.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,591.25 : 218,835.81 = 86,952.42 : x
  2. Step 2: Convert to fraction form
    158,591.25/218,835.81 = 86,952.42/x
  3. Step 3: Cross multiply
    158,591.25x = 218,835.81 × 86,952.42
  4. Step 4: Simplify right side
    158,591.25x = 19,028,303,262.16
  5. Step 5: Solve for x
    x = 19,028,303,262.16/158,591.25
  6. Step 6: Final answer
    x = 119,983.31

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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.