Home / 135,422.09-186,882.32-74,992.66

Finding the Fourth Proportional to 135,422.09, 186,882.32 and 74,992.66

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Solution

The fourth proportional to 135,422.09, 186,882.32 and 74,992.66 is: 103,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,422.09 : 186,882.32 = 74,992.66 : x
  2. Step 2: Convert to fraction form
    135,422.09/186,882.32 = 74,992.66/x
  3. Step 3: Cross multiply
    135,422.09x = 186,882.32 × 74,992.66
  4. Step 4: Simplify right side
    135,422.09x = 14,014,801,908.81
  5. Step 5: Solve for x
    x = 14,014,801,908.81/135,422.09
  6. Step 6: Final answer
    x = 103,489.78

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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.