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Finding the Fourth Proportional to 123,381.99, 170,275.23 and 69,668.37

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Solution

The fourth proportional to 123,381.99, 170,275.23 and 69,668.37 is: 96,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,381.99 : 170,275.23 = 69,668.37 : x
  2. Step 2: Convert to fraction form
    123,381.99/170,275.23 = 69,668.37/x
  3. Step 3: Cross multiply
    123,381.99x = 170,275.23 × 69,668.37
  4. Step 4: Simplify right side
    123,381.99x = 11,862,797,725.48
  5. Step 5: Solve for x
    x = 11,862,797,725.48/123,381.99
  6. Step 6: Final answer
    x = 96,146.92

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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.