Home / 109,793.68-151,456.77-66,786.32

Finding the Fourth Proportional to 109,793.68, 151,456.77 and 66,786.32

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Solution

The fourth proportional to 109,793.68, 151,456.77 and 66,786.32 is: 92,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,793.68 : 151,456.77 = 66,786.32 : x
  2. Step 2: Convert to fraction form
    109,793.68/151,456.77 = 66,786.32/x
  3. Step 3: Cross multiply
    109,793.68x = 151,456.77 × 66,786.32
  4. Step 4: Simplify right side
    109,793.68x = 10,115,240,686.03
  5. Step 5: Solve for x
    x = 10,115,240,686.03/109,793.68
  6. Step 6: Final answer
    x = 92,129.54

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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.