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Finding the Fourth Proportional to 158,906.60, 238,554.30 and 87,885.80

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Solution

The fourth proportional to 158,906.60, 238,554.30 and 87,885.80 is: 131,936.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,906.60 : 238,554.30 = 87,885.80 : x
  2. Step 2: Convert to fraction form
    158,906.60/238,554.30 = 87,885.80/x
  3. Step 3: Cross multiply
    158,906.60x = 238,554.30 × 87,885.80
  4. Step 4: Simplify right side
    158,906.60x = 20,965,535,498.94
  5. Step 5: Solve for x
    x = 20,965,535,498.94/158,906.60
  6. Step 6: Final answer
    x = 131,936.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.