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Finding the Fourth Proportional to 188,632.80, 260,311.20 and 103,751.04

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Solution

The fourth proportional to 188,632.80, 260,311.20 and 103,751.04 is: 143,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,632.80 : 260,311.20 = 103,751.04 : x
  2. Step 2: Convert to fraction form
    188,632.80/260,311.20 = 103,751.04/x
  3. Step 3: Cross multiply
    188,632.80x = 260,311.20 × 103,751.04
  4. Step 4: Simplify right side
    188,632.80x = 27,007,557,723.65
  5. Step 5: Solve for x
    x = 27,007,557,723.65/188,632.80
  6. Step 6: Final answer
    x = 143,175.30

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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.