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Finding the Fourth Proportional to 158,556.29, 218,809.81 and 86,936.14

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Solution

The fourth proportional to 158,556.29, 218,809.81 and 86,936.14 is: 119,973.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,556.29 : 218,809.81 = 86,936.14 : x
  2. Step 2: Convert to fraction form
    158,556.29/218,809.81 = 86,936.14/x
  3. Step 3: Cross multiply
    158,556.29x = 218,809.81 × 86,936.14
  4. Step 4: Simplify right side
    158,556.29x = 19,022,478,937.89
  5. Step 5: Solve for x
    x = 19,022,478,937.89/158,556.29
  6. Step 6: Final answer
    x = 119,973.04

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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.