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Finding the Fourth Proportional to 188,912.63, 260,630.95 and 107,193.56

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Solution

The fourth proportional to 188,912.63, 260,630.95 and 107,193.56 is: 147,888.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,912.63 : 260,630.95 = 107,193.56 : x
  2. Step 2: Convert to fraction form
    188,912.63/260,630.95 = 107,193.56/x
  3. Step 3: Cross multiply
    188,912.63x = 260,630.95 × 107,193.56
  4. Step 4: Simplify right side
    188,912.63x = 27,937,959,376.68
  5. Step 5: Solve for x
    x = 27,937,959,376.68/188,912.63
  6. Step 6: Final answer
    x = 147,888.26

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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.