Home / 188,520.97-260,163.91-103,640.17

Finding the Fourth Proportional to 188,520.97, 260,163.91 and 103,640.17

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Solution

The fourth proportional to 188,520.97, 260,163.91 and 103,640.17 is: 143,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,520.97 : 260,163.91 = 103,640.17 : x
  2. Step 2: Convert to fraction form
    188,520.97/260,163.91 = 103,640.17/x
  3. Step 3: Cross multiply
    188,520.97x = 260,163.91 × 103,640.17
  4. Step 4: Simplify right side
    188,520.97x = 26,963,431,860.26
  5. Step 5: Solve for x
    x = 26,963,431,860.26/188,520.97
  6. Step 6: Final answer
    x = 143,026.17

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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.