Home / 196,159.22-270,630.09-128,215.43

Finding the Fourth Proportional to 196,159.22, 270,630.09 and 128,215.43

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Solution

The fourth proportional to 196,159.22, 270,630.09 and 128,215.43 is: 176,891.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,159.22 : 270,630.09 = 128,215.43 : x
  2. Step 2: Convert to fraction form
    196,159.22/270,630.09 = 128,215.43/x
  3. Step 3: Cross multiply
    196,159.22x = 270,630.09 × 128,215.43
  4. Step 4: Simplify right side
    196,159.22x = 34,698,952,007.14
  5. Step 5: Solve for x
    x = 34,698,952,007.14/196,159.22
  6. Step 6: Final answer
    x = 176,891.78

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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.