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Finding the Fourth Proportional to 109,341.68, 150,839.92 and 63,991.56

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Solution

The fourth proportional to 109,341.68, 150,839.92 and 63,991.56 is: 88,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,341.68 : 150,839.92 = 63,991.56 : x
  2. Step 2: Convert to fraction form
    109,341.68/150,839.92 = 63,991.56/x
  3. Step 3: Cross multiply
    109,341.68x = 150,839.92 × 63,991.56
  4. Step 4: Simplify right side
    109,341.68x = 9,652,481,791.08
  5. Step 5: Solve for x
    x = 9,652,481,791.08/109,341.68
  6. Step 6: Final answer
    x = 88,278.16

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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.