Home / 206,117.96-309,127.19-86,110.07

Finding the Fourth Proportional to 206,117.96, 309,127.19 and 86,110.07

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Solution

The fourth proportional to 206,117.96, 309,127.19 and 86,110.07 is: 129,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,117.96 : 309,127.19 = 86,110.07 : x
  2. Step 2: Convert to fraction form
    206,117.96/309,127.19 = 86,110.07/x
  3. Step 3: Cross multiply
    206,117.96x = 309,127.19 × 86,110.07
  4. Step 4: Simplify right side
    206,117.96x = 26,618,961,993.62
  5. Step 5: Solve for x
    x = 26,618,961,993.62/206,117.96
  6. Step 6: Final answer
    x = 129,144.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.