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Finding the Fourth Proportional to 122,042.83, 168,399.67 and 68,330.11

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Solution

The fourth proportional to 122,042.83, 168,399.67 and 68,330.11 is: 94,284.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,042.83 : 168,399.67 = 68,330.11 : x
  2. Step 2: Convert to fraction form
    122,042.83/168,399.67 = 68,330.11/x
  3. Step 3: Cross multiply
    122,042.83x = 168,399.67 × 68,330.11
  4. Step 4: Simplify right side
    122,042.83x = 11,506,766,791.41
  5. Step 5: Solve for x
    x = 11,506,766,791.41/122,042.83
  6. Step 6: Final answer
    x = 94,284.66

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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.