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Finding the Fourth Proportional to 123,018.45, 169,765.97 and 69,304.11

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Solution

The fourth proportional to 123,018.45, 169,765.97 and 69,304.11 is: 95,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,018.45 : 169,765.97 = 69,304.11 : x
  2. Step 2: Convert to fraction form
    123,018.45/169,765.97 = 69,304.11/x
  3. Step 3: Cross multiply
    123,018.45x = 169,765.97 × 69,304.11
  4. Step 4: Simplify right side
    123,018.45x = 11,765,479,459.14
  5. Step 5: Solve for x
    x = 11,765,479,459.14/123,018.45
  6. Step 6: Final answer
    x = 95,639.96

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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.