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Finding the Fourth Proportional to 118,773.20, 163,920.84 and 68,474

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Solution

The fourth proportional to 118,773.20, 163,920.84 and 68,474 is: 94,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,773.20 : 163,920.84 = 68,474 : x
  2. Step 2: Convert to fraction form
    118,773.20/163,920.84 = 68,474/x
  3. Step 3: Cross multiply
    118,773.20x = 163,920.84 × 68,474
  4. Step 4: Simplify right side
    118,773.20x = 11,224,315,598.16
  5. Step 5: Solve for x
    x = 11,224,315,598.16/118,773.20
  6. Step 6: Final answer
    x = 94,502.09

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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.