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Finding the Fourth Proportional to 158,540.96, 218,786.23 and 86,925.62

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Solution

The fourth proportional to 158,540.96, 218,786.23 and 86,925.62 is: 119,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,540.96 : 218,786.23 = 86,925.62 : x
  2. Step 2: Convert to fraction form
    158,540.96/218,786.23 = 86,925.62/x
  3. Step 3: Cross multiply
    158,540.96x = 218,786.23 × 86,925.62
  4. Step 4: Simplify right side
    158,540.96x = 19,018,127,161.65
  5. Step 5: Solve for x
    x = 19,018,127,161.65/158,540.96
  6. Step 6: Final answer
    x = 119,957.19

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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.