Home / 123,292.05-169,988.11-100,608

Finding the Fourth Proportional to 123,292.05, 169,988.11 and 100,608

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Solution

The fourth proportional to 123,292.05, 169,988.11 and 100,608 is: 138,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,292.05 : 169,988.11 = 100,608 : x
  2. Step 2: Convert to fraction form
    123,292.05/169,988.11 = 100,608/x
  3. Step 3: Cross multiply
    123,292.05x = 169,988.11 × 100,608
  4. Step 4: Simplify right side
    123,292.05x = 17,102,163,770.88
  5. Step 5: Solve for x
    x = 17,102,163,770.88/123,292.05
  6. Step 6: Final answer
    x = 138,712.62

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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.