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Finding the Fourth Proportional to 188,731.50, 260,451.30 and 103,850.39

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Solution

The fourth proportional to 188,731.50, 260,451.30 and 103,850.39 is: 143,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,731.50 : 260,451.30 = 103,850.39 : x
  2. Step 2: Convert to fraction form
    188,731.50/260,451.30 = 103,850.39/x
  3. Step 3: Cross multiply
    188,731.50x = 260,451.30 × 103,850.39
  4. Step 4: Simplify right side
    188,731.50x = 27,047,967,778.75
  5. Step 5: Solve for x
    x = 27,047,967,778.75/188,731.50
  6. Step 6: Final answer
    x = 143,314.54

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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.