Home / 109,685.32-151,371.66-61,940.68

Finding the Fourth Proportional to 109,685.32, 151,371.66 and 61,940.68

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Solution

The fourth proportional to 109,685.32, 151,371.66 and 61,940.68 is: 85,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,685.32 : 151,371.66 = 61,940.68 : x
  2. Step 2: Convert to fraction form
    109,685.32/151,371.66 = 61,940.68/x
  3. Step 3: Cross multiply
    109,685.32x = 151,371.66 × 61,940.68
  4. Step 4: Simplify right side
    109,685.32x = 9,376,063,553.13
  5. Step 5: Solve for x
    x = 9,376,063,553.13/109,685.32
  6. Step 6: Final answer
    x = 85,481.48

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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.