Home / 149,992.20-206,989.38-86,342.40

Finding the Fourth Proportional to 149,992.20, 206,989.38 and 86,342.40

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Solution

The fourth proportional to 149,992.20, 206,989.38 and 86,342.40 is: 119,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,992.20 : 206,989.38 = 86,342.40 : x
  2. Step 2: Convert to fraction form
    149,992.20/206,989.38 = 86,342.40/x
  3. Step 3: Cross multiply
    149,992.20x = 206,989.38 × 86,342.40
  4. Step 4: Simplify right side
    149,992.20x = 17,871,959,843.71
  5. Step 5: Solve for x
    x = 17,871,959,843.71/149,992.20
  6. Step 6: Final answer
    x = 119,152.59

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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.