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Finding the Fourth Proportional to 161,768.39, 242,719.25 and 67,017.65

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Solution

The fourth proportional to 161,768.39, 242,719.25 and 67,017.65 is: 100,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,768.39 : 242,719.25 = 67,017.65 : x
  2. Step 2: Convert to fraction form
    161,768.39/242,719.25 = 67,017.65/x
  3. Step 3: Cross multiply
    161,768.39x = 242,719.25 × 67,017.65
  4. Step 4: Simplify right side
    161,768.39x = 16,266,472,196.08
  5. Step 5: Solve for x
    x = 16,266,472,196.08/161,768.39
  6. Step 6: Final answer
    x = 100,554.09

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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.