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Finding the Fourth Proportional to 124,782.70, 172,200.22 and 68,194.08

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Solution

The fourth proportional to 124,782.70, 172,200.22 and 68,194.08 is: 94,107.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,782.70 : 172,200.22 = 68,194.08 : x
  2. Step 2: Convert to fraction form
    124,782.70/172,200.22 = 68,194.08/x
  3. Step 3: Cross multiply
    124,782.70x = 172,200.22 × 68,194.08
  4. Step 4: Simplify right side
    124,782.70x = 11,743,035,578.70
  5. Step 5: Solve for x
    x = 11,743,035,578.70/124,782.70
  6. Step 6: Final answer
    x = 94,107.88

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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.