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Finding the Fourth Proportional to 122,002.80, 168,363.83 and 68,287.81

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Solution

The fourth proportional to 122,002.80, 168,363.83 and 68,287.81 is: 94,237.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,002.80 : 168,363.83 = 68,287.81 : x
  2. Step 2: Convert to fraction form
    122,002.80/168,363.83 = 68,287.81/x
  3. Step 3: Cross multiply
    122,002.80x = 168,363.83 × 68,287.81
  4. Step 4: Simplify right side
    122,002.80x = 11,497,197,233.91
  5. Step 5: Solve for x
    x = 11,497,197,233.91/122,002.80
  6. Step 6: Final answer
    x = 94,237.16

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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.