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Finding the Fourth Proportional to 122,180.96, 168,609.48 and 74,434.32

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Solution

The fourth proportional to 122,180.96, 168,609.48 and 74,434.32 is: 102,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,180.96 : 168,609.48 = 74,434.32 : x
  2. Step 2: Convert to fraction form
    122,180.96/168,609.48 = 74,434.32/x
  3. Step 3: Cross multiply
    122,180.96x = 168,609.48 × 74,434.32
  4. Step 4: Simplify right side
    122,180.96x = 12,550,331,989.35
  5. Step 5: Solve for x
    x = 12,550,331,989.35/122,180.96
  6. Step 6: Final answer
    x = 102,719.22

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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.