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Finding the Fourth Proportional to 79,288.92, 118,702.80 and 68,266.44

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Solution

The fourth proportional to 79,288.92, 118,702.80 and 68,266.44 is: 102,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,288.92 : 118,702.80 = 68,266.44 : x
  2. Step 2: Convert to fraction form
    79,288.92/118,702.80 = 68,266.44/x
  3. Step 3: Cross multiply
    79,288.92x = 118,702.80 × 68,266.44
  4. Step 4: Simplify right side
    79,288.92x = 8,103,417,574.03
  5. Step 5: Solve for x
    x = 8,103,417,574.03/79,288.92
  6. Step 6: Final answer
    x = 102,201.13

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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.