Home / 151,986.30-227,979.45-139,739.10

Finding the Fourth Proportional to 151,986.30, 227,979.45 and 139,739.10

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Solution

The fourth proportional to 151,986.30, 227,979.45 and 139,739.10 is: 209,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,986.30 : 227,979.45 = 139,739.10 : x
  2. Step 2: Convert to fraction form
    151,986.30/227,979.45 = 139,739.10/x
  3. Step 3: Cross multiply
    151,986.30x = 227,979.45 × 139,739.10
  4. Step 4: Simplify right side
    151,986.30x = 31,857,643,161.50
  5. Step 5: Solve for x
    x = 31,857,643,161.50/151,986.30
  6. Step 6: Final answer
    x = 209,608.65

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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.