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Finding the Fourth Proportional to 123,615.77, 170,593.11 and 69,908.81

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Solution

The fourth proportional to 123,615.77, 170,593.11 and 69,908.81 is: 96,476.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,615.77 : 170,593.11 = 69,908.81 : x
  2. Step 2: Convert to fraction form
    123,615.77/170,593.11 = 69,908.81/x
  3. Step 3: Cross multiply
    123,615.77x = 170,593.11 × 69,908.81
  4. Step 4: Simplify right side
    123,615.77x = 11,925,961,740.78
  5. Step 5: Solve for x
    x = 11,925,961,740.78/123,615.77
  6. Step 6: Final answer
    x = 96,476.06

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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.