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Finding the Fourth Proportional to 158,267.80, 218,410.21 and 86,654.49

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Solution

The fourth proportional to 158,267.80, 218,410.21 and 86,654.49 is: 119,583.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,267.80 : 218,410.21 = 86,654.49 : x
  2. Step 2: Convert to fraction form
    158,267.80/218,410.21 = 86,654.49/x
  3. Step 3: Cross multiply
    158,267.80x = 218,410.21 × 86,654.49
  4. Step 4: Simplify right side
    158,267.80x = 18,926,224,160.19
  5. Step 5: Solve for x
    x = 18,926,224,160.19/158,267.80
  6. Step 6: Final answer
    x = 119,583.54

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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.