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Finding the Fourth Proportional to 157,796.16, 217,635.60 and 101,212.80

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Solution

The fourth proportional to 157,796.16, 217,635.60 and 101,212.80 is: 139,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,796.16 : 217,635.60 = 101,212.80 : x
  2. Step 2: Convert to fraction form
    157,796.16/217,635.60 = 101,212.80/x
  3. Step 3: Cross multiply
    157,796.16x = 217,635.60 × 101,212.80
  4. Step 4: Simplify right side
    157,796.16x = 22,027,508,455.68
  5. Step 5: Solve for x
    x = 22,027,508,455.68/157,796.16
  6. Step 6: Final answer
    x = 139,594.71

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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.