Home / 108,639.33-163,208.48-76,691.85

Finding the Fourth Proportional to 108,639.33, 163,208.48 and 76,691.85

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Solution

The fourth proportional to 108,639.33, 163,208.48 and 76,691.85 is: 115,213.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,639.33 : 163,208.48 = 76,691.85 : x
  2. Step 2: Convert to fraction form
    108,639.33/163,208.48 = 76,691.85/x
  3. Step 3: Cross multiply
    108,639.33x = 163,208.48 × 76,691.85
  4. Step 4: Simplify right side
    108,639.33x = 12,516,759,883.43
  5. Step 5: Solve for x
    x = 12,516,759,883.43/108,639.33
  6. Step 6: Final answer
    x = 115,213.89

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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.