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Finding the Fourth Proportional to 124,879.80, 172,334.76 and 68,292.48

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Solution

The fourth proportional to 124,879.80, 172,334.76 and 68,292.48 is: 94,243.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,879.80 : 172,334.76 = 68,292.48 : x
  2. Step 2: Convert to fraction form
    124,879.80/172,334.76 = 68,292.48/x
  3. Step 3: Cross multiply
    124,879.80x = 172,334.76 × 68,292.48
  4. Step 4: Simplify right side
    124,879.80x = 11,769,168,150.60
  5. Step 5: Solve for x
    x = 11,769,168,150.60/124,879.80
  6. Step 6: Final answer
    x = 94,243.97

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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.