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Finding the Fourth Proportional to 136,649.86, 204,980.28 and 43,155.64

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Solution

The fourth proportional to 136,649.86, 204,980.28 and 43,155.64 is: 64,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,649.86 : 204,980.28 = 43,155.64 : x
  2. Step 2: Convert to fraction form
    136,649.86/204,980.28 = 43,155.64/x
  3. Step 3: Cross multiply
    136,649.86x = 204,980.28 × 43,155.64
  4. Step 4: Simplify right side
    136,649.86x = 8,846,055,170.78
  5. Step 5: Solve for x
    x = 8,846,055,170.78/136,649.86
  6. Step 6: Final answer
    x = 64,735.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.