Home / 118,982.72-164,194.80-68,680.64

Finding the Fourth Proportional to 118,982.72, 164,194.80 and 68,680.64

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Solution

The fourth proportional to 118,982.72, 164,194.80 and 68,680.64 is: 94,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,982.72 : 164,194.80 = 68,680.64 : x
  2. Step 2: Convert to fraction form
    118,982.72/164,194.80 = 68,680.64/x
  3. Step 3: Cross multiply
    118,982.72x = 164,194.80 × 68,680.64
  4. Step 4: Simplify right side
    118,982.72x = 11,277,003,948.67
  5. Step 5: Solve for x
    x = 11,277,003,948.67/118,982.72
  6. Step 6: Final answer
    x = 94,778.50

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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.