Home / 123,992.03-171,140.38-76,288.09

Finding the Fourth Proportional to 123,992.03, 171,140.38 and 76,288.09

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Solution

The fourth proportional to 123,992.03, 171,140.38 and 76,288.09 is: 105,296.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,992.03 : 171,140.38 = 76,288.09 : x
  2. Step 2: Convert to fraction form
    123,992.03/171,140.38 = 76,288.09/x
  3. Step 3: Cross multiply
    123,992.03x = 171,140.38 × 76,288.09
  4. Step 4: Simplify right side
    123,992.03x = 13,055,972,712.07
  5. Step 5: Solve for x
    x = 13,055,972,712.07/123,992.03
  6. Step 6: Final answer
    x = 105,296.87

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1.5x scale

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.