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Finding the Fourth Proportional to 158,182.84, 218,287.02 and 86,558.05

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Solution

The fourth proportional to 158,182.84, 218,287.02 and 86,558.05 is: 119,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,182.84 : 218,287.02 = 86,558.05 : x
  2. Step 2: Convert to fraction form
    158,182.84/218,287.02 = 86,558.05/x
  3. Step 3: Cross multiply
    158,182.84x = 218,287.02 × 86,558.05
  4. Step 4: Simplify right side
    158,182.84x = 18,894,498,791.51
  5. Step 5: Solve for x
    x = 18,894,498,791.51/158,182.84
  6. Step 6: Final answer
    x = 119,447.21

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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.