Home / 188,812.11-260,560.78-103,928.57

Finding the Fourth Proportional to 188,812.11, 260,560.78 and 103,928.57

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Solution

The fourth proportional to 188,812.11, 260,560.78 and 103,928.57 is: 143,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,812.11 : 260,560.78 = 103,928.57 : x
  2. Step 2: Convert to fraction form
    188,812.11/260,560.78 = 103,928.57/x
  3. Step 3: Cross multiply
    188,812.11x = 260,560.78 × 103,928.57
  4. Step 4: Simplify right side
    188,812.11x = 27,079,707,960.68
  5. Step 5: Solve for x
    x = 27,079,707,960.68/188,812.11
  6. Step 6: Final answer
    x = 143,421.46

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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.