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Finding the Fourth Proportional to 109,147.68, 150,644.43 and 68,330.79

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Solution

The fourth proportional to 109,147.68, 150,644.43 and 68,330.79 is: 94,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,147.68 : 150,644.43 = 68,330.79 : x
  2. Step 2: Convert to fraction form
    109,147.68/150,644.43 = 68,330.79/x
  3. Step 3: Cross multiply
    109,147.68x = 150,644.43 × 68,330.79
  4. Step 4: Simplify right side
    109,147.68x = 10,293,652,911.00
  5. Step 5: Solve for x
    x = 10,293,652,911.00/109,147.68
  6. Step 6: Final answer
    x = 94,309.41

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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.