Home / 187,620.06-258,906.06-102,720.72

Finding the Fourth Proportional to 187,620.06, 258,906.06 and 102,720.72

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Solution

The fourth proportional to 187,620.06, 258,906.06 and 102,720.72 is: 141,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,620.06 : 258,906.06 = 102,720.72 : x
  2. Step 2: Convert to fraction form
    187,620.06/258,906.06 = 102,720.72/x
  3. Step 3: Cross multiply
    187,620.06x = 258,906.06 × 102,720.72
  4. Step 4: Simplify right side
    187,620.06x = 26,595,016,895.56
  5. Step 5: Solve for x
    x = 26,595,016,895.56/187,620.06
  6. Step 6: Final answer
    x = 141,749.33

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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.