Home / 118,918.44-164,073.33-78,617.50

Finding the Fourth Proportional to 118,918.44, 164,073.33 and 78,617.50

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Solution

The fourth proportional to 118,918.44, 164,073.33 and 78,617.50 is: 108,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,918.44 : 164,073.33 = 78,617.50 : x
  2. Step 2: Convert to fraction form
    118,918.44/164,073.33 = 78,617.50/x
  3. Step 3: Cross multiply
    118,918.44x = 164,073.33 × 78,617.50
  4. Step 4: Simplify right side
    118,918.44x = 12,899,034,611.09
  5. Step 5: Solve for x
    x = 12,899,034,611.09/118,918.44
  6. Step 6: Final answer
    x = 108,469.59

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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.