Home / 197,121.64-271,932.73-129,108.69

Finding the Fourth Proportional to 197,121.64, 271,932.73 and 129,108.69

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Solution

The fourth proportional to 197,121.64, 271,932.73 and 129,108.69 is: 178,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,121.64 : 271,932.73 = 129,108.69 : x
  2. Step 2: Convert to fraction form
    197,121.64/271,932.73 = 129,108.69/x
  3. Step 3: Cross multiply
    197,121.64x = 271,932.73 × 129,108.69
  4. Step 4: Simplify right side
    197,121.64x = 35,108,878,538.42
  5. Step 5: Solve for x
    x = 35,108,878,538.42/197,121.64
  6. Step 6: Final answer
    x = 178,107.68

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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.