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Finding the Fourth Proportional to 123,569.69, 170,529.06 and 69,857.88

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Solution

The fourth proportional to 123,569.69, 170,529.06 and 69,857.88 is: 96,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,569.69 : 170,529.06 = 69,857.88 : x
  2. Step 2: Convert to fraction form
    123,569.69/170,529.06 = 69,857.88/x
  3. Step 3: Cross multiply
    123,569.69x = 170,529.06 × 69,857.88
  4. Step 4: Simplify right side
    123,569.69x = 11,912,798,609.99
  5. Step 5: Solve for x
    x = 11,912,798,609.99/123,569.69
  6. Step 6: Final answer
    x = 96,405.51

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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.