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Finding the Fourth Proportional to 158,855.76, 238,213.67 and 74,639.88

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Solution

The fourth proportional to 158,855.76, 238,213.67 and 74,639.88 is: 111,926.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,855.76 : 238,213.67 = 74,639.88 : x
  2. Step 2: Convert to fraction form
    158,855.76/238,213.67 = 74,639.88/x
  3. Step 3: Cross multiply
    158,855.76x = 238,213.67 × 74,639.88
  4. Step 4: Simplify right side
    158,855.76x = 17,780,239,369.96
  5. Step 5: Solve for x
    x = 17,780,239,369.96/158,855.76
  6. Step 6: Final answer
    x = 111,926.94

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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.