Home / 196,142.85-270,587.25-128,141.73

Finding the Fourth Proportional to 196,142.85, 270,587.25 and 128,141.73

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Solution

The fourth proportional to 196,142.85, 270,587.25 and 128,141.73 is: 176,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,142.85 : 270,587.25 = 128,141.73 : x
  2. Step 2: Convert to fraction form
    196,142.85/270,587.25 = 128,141.73/x
  3. Step 3: Cross multiply
    196,142.85x = 270,587.25 × 128,141.73
  4. Step 4: Simplify right side
    196,142.85x = 34,673,518,330.94
  5. Step 5: Solve for x
    x = 34,673,518,330.94/196,142.85
  6. Step 6: Final answer
    x = 176,776.87

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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.