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Finding the Fourth Proportional to 118,571.68, 163,634.16 and 68,286.88

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Solution

The fourth proportional to 118,571.68, 163,634.16 and 68,286.88 is: 94,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,571.68 : 163,634.16 = 68,286.88 : x
  2. Step 2: Convert to fraction form
    118,571.68/163,634.16 = 68,286.88/x
  3. Step 3: Cross multiply
    118,571.68x = 163,634.16 × 68,286.88
  4. Step 4: Simplify right side
    118,571.68x = 11,174,066,247.82
  5. Step 5: Solve for x
    x = 11,174,066,247.82/118,571.68
  6. Step 6: Final answer
    x = 94,238.91

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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.