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Finding the Fourth Proportional to 158,758.53, 238,174.11 and 68,816.30

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Solution

The fourth proportional to 158,758.53, 238,174.11 and 68,816.30 is: 103,240.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,758.53 : 238,174.11 = 68,816.30 : x
  2. Step 2: Convert to fraction form
    158,758.53/238,174.11 = 68,816.30/x
  3. Step 3: Cross multiply
    158,758.53x = 238,174.11 × 68,816.30
  4. Step 4: Simplify right side
    158,758.53x = 16,390,259,815.12
  5. Step 5: Solve for x
    x = 16,390,259,815.12/158,758.53
  6. Step 6: Final answer
    x = 103,240.19

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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.