Home / 108,839.78-163,322.66-45,654.21

Finding the Fourth Proportional to 108,839.78, 163,322.66 and 45,654.21

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Solution

The fourth proportional to 108,839.78, 163,322.66 and 45,654.21 is: 68,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,839.78 : 163,322.66 = 45,654.21 : x
  2. Step 2: Convert to fraction form
    108,839.78/163,322.66 = 45,654.21/x
  3. Step 3: Cross multiply
    108,839.78x = 163,322.66 × 45,654.21
  4. Step 4: Simplify right side
    108,839.78x = 7,456,367,017.40
  5. Step 5: Solve for x
    x = 7,456,367,017.40/108,839.78
  6. Step 6: Final answer
    x = 68,507.74

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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.