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Finding the Fourth Proportional to 188,654.88, 260,380.70 and 108,136.32

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Solution

The fourth proportional to 188,654.88, 260,380.70 and 108,136.32 is: 149,249.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,654.88 : 260,380.70 = 108,136.32 : x
  2. Step 2: Convert to fraction form
    188,654.88/260,380.70 = 108,136.32/x
  3. Step 3: Cross multiply
    188,654.88x = 260,380.70 × 108,136.32
  4. Step 4: Simplify right side
    188,654.88x = 28,156,610,697.02
  5. Step 5: Solve for x
    x = 28,156,610,697.02/188,654.88
  6. Step 6: Final answer
    x = 149,249.31

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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.