Home / 196,616.50-271,253.75-121,033.78

Finding the Fourth Proportional to 196,616.50, 271,253.75 and 121,033.78

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Solution

The fourth proportional to 196,616.50, 271,253.75 and 121,033.78 is: 166,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,616.50 : 271,253.75 = 121,033.78 : x
  2. Step 2: Convert to fraction form
    196,616.50/271,253.75 = 121,033.78/x
  3. Step 3: Cross multiply
    196,616.50x = 271,253.75 × 121,033.78
  4. Step 4: Simplify right side
    196,616.50x = 32,830,866,701.68
  5. Step 5: Solve for x
    x = 32,830,866,701.68/196,616.50
  6. Step 6: Final answer
    x = 166,979.20

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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.