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Finding the Fourth Proportional to 123,204.51, 170,021.99 and 69,489.36

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Solution

The fourth proportional to 123,204.51, 170,021.99 and 69,489.36 is: 95,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,204.51 : 170,021.99 = 69,489.36 : x
  2. Step 2: Convert to fraction form
    123,204.51/170,021.99 = 69,489.36/x
  3. Step 3: Cross multiply
    123,204.51x = 170,021.99 × 69,489.36
  4. Step 4: Simplify right side
    123,204.51x = 11,814,719,444.75
  5. Step 5: Solve for x
    x = 11,814,719,444.75/123,204.51
  6. Step 6: Final answer
    x = 95,895.19

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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.