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Finding the Fourth Proportional to 188,612.75, 260,211.76 and 107,996.90

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Solution

The fourth proportional to 188,612.75, 260,211.76 and 107,996.90 is: 148,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,612.75 : 260,211.76 = 107,996.90 : x
  2. Step 2: Convert to fraction form
    188,612.75/260,211.76 = 107,996.90/x
  3. Step 3: Cross multiply
    188,612.75x = 260,211.76 × 107,996.90
  4. Step 4: Simplify right side
    188,612.75x = 28,102,061,852.49
  5. Step 5: Solve for x
    x = 28,102,061,852.49/188,612.75
  6. Step 6: Final answer
    x = 148,993.43

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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.