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Finding the Fourth Proportional to 122,470.86, 168,998.12 and 68,743.56

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Solution

The fourth proportional to 122,470.86, 168,998.12 and 68,743.56 is: 94,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,470.86 : 168,998.12 = 68,743.56 : x
  2. Step 2: Convert to fraction form
    122,470.86/168,998.12 = 68,743.56/x
  3. Step 3: Cross multiply
    122,470.86x = 168,998.12 × 68,743.56
  4. Step 4: Simplify right side
    122,470.86x = 11,617,532,402.11
  5. Step 5: Solve for x
    x = 11,617,532,402.11/122,470.86
  6. Step 6: Final answer
    x = 94,859.56

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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.