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Finding the Fourth Proportional to 136,474.30, 188,335.30 and 79,147.63

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Solution

The fourth proportional to 136,474.30, 188,335.30 and 79,147.63 is: 109,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,474.30 : 188,335.30 = 79,147.63 : x
  2. Step 2: Convert to fraction form
    136,474.30/188,335.30 = 79,147.63/x
  3. Step 3: Cross multiply
    136,474.30x = 188,335.30 × 79,147.63
  4. Step 4: Simplify right side
    136,474.30x = 14,906,291,698.66
  5. Step 5: Solve for x
    x = 14,906,291,698.66/136,474.30
  6. Step 6: Final answer
    x = 109,224.17

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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.