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Finding the Fourth Proportional to 122,143.59, 168,568.02 and 68,440.59

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Solution

The fourth proportional to 122,143.59, 168,568.02 and 68,440.59 is: 94,453.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,143.59 : 168,568.02 = 68,440.59 : x
  2. Step 2: Convert to fraction form
    122,143.59/168,568.02 = 68,440.59/x
  3. Step 3: Cross multiply
    122,143.59x = 168,568.02 × 68,440.59
  4. Step 4: Simplify right side
    122,143.59x = 11,536,894,743.93
  5. Step 5: Solve for x
    x = 11,536,894,743.93/122,143.59
  6. Step 6: Final answer
    x = 94,453.54

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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.