Home / 118,780.97-163,913.36-65,066.49

Finding the Fourth Proportional to 118,780.97, 163,913.36 and 65,066.49

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Solution

The fourth proportional to 118,780.97, 163,913.36 and 65,066.49 is: 89,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,780.97 : 163,913.36 = 65,066.49 : x
  2. Step 2: Convert to fraction form
    118,780.97/163,913.36 = 65,066.49/x
  3. Step 3: Cross multiply
    118,780.97x = 163,913.36 × 65,066.49
  4. Step 4: Simplify right side
    118,780.97x = 10,665,266,673.97
  5. Step 5: Solve for x
    x = 10,665,266,673.97/118,780.97
  6. Step 6: Final answer
    x = 89,789.36

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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.