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Finding the Fourth Proportional to 108,906.53, 163,369.88 and 42,351.66

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Solution

The fourth proportional to 108,906.53, 163,369.88 and 42,351.66 is: 63,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,906.53 : 163,369.88 = 42,351.66 : x
  2. Step 2: Convert to fraction form
    108,906.53/163,369.88 = 42,351.66/x
  3. Step 3: Cross multiply
    108,906.53x = 163,369.88 × 42,351.66
  4. Step 4: Simplify right side
    108,906.53x = 6,918,985,400.24
  5. Step 5: Solve for x
    x = 6,918,985,400.24/108,906.53
  6. Step 6: Final answer
    x = 63,531.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.