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Finding the Fourth Proportional to 109,296.55, 150,832.97 and 63,978.76

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Solution

The fourth proportional to 109,296.55, 150,832.97 and 63,978.76 is: 88,292.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,296.55 : 150,832.97 = 63,978.76 : x
  2. Step 2: Convert to fraction form
    109,296.55/150,832.97 = 63,978.76/x
  3. Step 3: Cross multiply
    109,296.55x = 150,832.97 × 63,978.76
  4. Step 4: Simplify right side
    109,296.55x = 9,650,106,387.72
  5. Step 5: Solve for x
    x = 9,650,106,387.72/109,296.55
  6. Step 6: Final answer
    x = 88,292.87

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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.