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Finding the Fourth Proportional to 123,708, 170,717.34 and 67,119.37

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Solution

The fourth proportional to 123,708, 170,717.34 and 67,119.37 is: 92,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,708 : 170,717.34 = 67,119.37 : x
  2. Step 2: Convert to fraction form
    123,708/170,717.34 = 67,119.37/x
  3. Step 3: Cross multiply
    123,708x = 170,717.34 × 67,119.37
  4. Step 4: Simplify right side
    123,708x = 11,458,440,308.88
  5. Step 5: Solve for x
    x = 11,458,440,308.88/123,708
  6. Step 6: Final answer
    x = 92,624.89

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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.