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Finding the Fourth Proportional to 118,338, 163,299.96 and 67,349.20

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Solution

The fourth proportional to 118,338, 163,299.96 and 67,349.20 is: 92,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338 : 163,299.96 = 67,349.20 : x
  2. Step 2: Convert to fraction form
    118,338/163,299.96 = 67,349.20/x
  3. Step 3: Cross multiply
    118,338x = 163,299.96 × 67,349.20
  4. Step 4: Simplify right side
    118,338x = 10,998,121,666.03
  5. Step 5: Solve for x
    x = 10,998,121,666.03/118,338
  6. Step 6: Final answer
    x = 92,938.21

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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.