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Finding the Fourth Proportional to 188,188.31, 259,700.78 and 103,305.38

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Solution

The fourth proportional to 188,188.31, 259,700.78 and 103,305.38 is: 142,561.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,188.31 : 259,700.78 = 103,305.38 : x
  2. Step 2: Convert to fraction form
    188,188.31/259,700.78 = 103,305.38/x
  3. Step 3: Cross multiply
    188,188.31x = 259,700.78 × 103,305.38
  4. Step 4: Simplify right side
    188,188.31x = 26,828,486,723.96
  5. Step 5: Solve for x
    x = 26,828,486,723.96/188,188.31
  6. Step 6: Final answer
    x = 142,561.92

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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.