Home / 78,934.59-117,826.08-68,969.97

Finding the Fourth Proportional to 78,934.59, 117,826.08 and 68,969.97

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Solution

The fourth proportional to 78,934.59, 117,826.08 and 68,969.97 is: 102,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,934.59 : 117,826.08 = 68,969.97 : x
  2. Step 2: Convert to fraction form
    78,934.59/117,826.08 = 68,969.97/x
  3. Step 3: Cross multiply
    78,934.59x = 117,826.08 × 68,969.97
  4. Step 4: Simplify right side
    78,934.59x = 8,126,461,202.82
  5. Step 5: Solve for x
    x = 8,126,461,202.82/78,934.59
  6. Step 6: Final answer
    x = 102,951.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.