Home / 108,789.75-163,434.78-77,276.43

Finding the Fourth Proportional to 108,789.75, 163,434.78 and 77,276.43

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Solution

The fourth proportional to 108,789.75, 163,434.78 and 77,276.43 is: 116,092.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,789.75 : 163,434.78 = 77,276.43 : x
  2. Step 2: Convert to fraction form
    108,789.75/163,434.78 = 77,276.43/x
  3. Step 3: Cross multiply
    108,789.75x = 163,434.78 × 77,276.43
  4. Step 4: Simplify right side
    108,789.75x = 12,629,656,336.24
  5. Step 5: Solve for x
    x = 12,629,656,336.24/108,789.75
  6. Step 6: Final answer
    x = 116,092.34

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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.