Home / 135,906.39-187,550.08-74,653.78

Finding the Fourth Proportional to 135,906.39, 187,550.08 and 74,653.78

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Solution

The fourth proportional to 135,906.39, 187,550.08 and 74,653.78 is: 103,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,906.39 : 187,550.08 = 74,653.78 : x
  2. Step 2: Convert to fraction form
    135,906.39/187,550.08 = 74,653.78/x
  3. Step 3: Cross multiply
    135,906.39x = 187,550.08 × 74,653.78
  4. Step 4: Simplify right side
    135,906.39x = 14,001,322,411.30
  5. Step 5: Solve for x
    x = 14,001,322,411.30/135,906.39
  6. Step 6: Final answer
    x = 103,021.81

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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.