Home / 187,993.80-259,428.06-106,320.78

Finding the Fourth Proportional to 187,993.80, 259,428.06 and 106,320.78

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Solution

The fourth proportional to 187,993.80, 259,428.06 and 106,320.78 is: 146,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,993.80 : 259,428.06 = 106,320.78 : x
  2. Step 2: Convert to fraction form
    187,993.80/259,428.06 = 106,320.78/x
  3. Step 3: Cross multiply
    187,993.80x = 259,428.06 × 106,320.78
  4. Step 4: Simplify right side
    187,993.80x = 27,582,593,693.09
  5. Step 5: Solve for x
    x = 27,582,593,693.09/187,993.80
  6. Step 6: Final answer
    x = 146,720.76

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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.