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Finding the Fourth Proportional to 188,796.42, 260,539.13 and 103,912.88

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Solution

The fourth proportional to 188,796.42, 260,539.13 and 103,912.88 is: 143,399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,796.42 : 260,539.13 = 103,912.88 : x
  2. Step 2: Convert to fraction form
    188,796.42/260,539.13 = 103,912.88/x
  3. Step 3: Cross multiply
    188,796.42x = 260,539.13 × 103,912.88
  4. Step 4: Simplify right side
    188,796.42x = 27,073,370,308.08
  5. Step 5: Solve for x
    x = 27,073,370,308.08/188,796.42
  6. Step 6: Final answer
    x = 143,399.81

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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.