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Finding the Fourth Proportional to 188,452.87, 260,125.56 and 120,652.45

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Solution

The fourth proportional to 188,452.87, 260,125.56 and 120,652.45 is: 166,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,452.87 : 260,125.56 = 120,652.45 : x
  2. Step 2: Convert to fraction form
    188,452.87/260,125.56 = 120,652.45/x
  3. Step 3: Cross multiply
    188,452.87x = 260,125.56 × 120,652.45
  4. Step 4: Simplify right side
    188,452.87x = 31,384,785,471.31
  5. Step 5: Solve for x
    x = 31,384,785,471.31/188,452.87
  6. Step 6: Final answer
    x = 166,539.18

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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.