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Finding the Fourth Proportional to 100,654.20, 150,981.30 and 53,998.20

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Solution

The fourth proportional to 100,654.20, 150,981.30 and 53,998.20 is: 80,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,654.20 : 150,981.30 = 53,998.20 : x
  2. Step 2: Convert to fraction form
    100,654.20/150,981.30 = 53,998.20/x
  3. Step 3: Cross multiply
    100,654.20x = 150,981.30 × 53,998.20
  4. Step 4: Simplify right side
    100,654.20x = 8,152,718,433.66
  5. Step 5: Solve for x
    x = 8,152,718,433.66/100,654.20
  6. Step 6: Final answer
    x = 80,997.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.