Home / 196,921.75-271,642.59-129,048.20

Finding the Fourth Proportional to 196,921.75, 271,642.59 and 129,048.20

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Solution

The fourth proportional to 196,921.75, 271,642.59 and 129,048.20 is: 178,014.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,921.75 : 271,642.59 = 129,048.20 : x
  2. Step 2: Convert to fraction form
    196,921.75/271,642.59 = 129,048.20/x
  3. Step 3: Cross multiply
    196,921.75x = 271,642.59 × 129,048.20
  4. Step 4: Simplify right side
    196,921.75x = 35,054,987,316.70
  5. Step 5: Solve for x
    x = 35,054,987,316.70/196,921.75
  6. Step 6: Final answer
    x = 178,014.81

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1.5x scale

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.