Home / 115,456.71-159,440.30-109,166.70

Finding the Fourth Proportional to 115,456.71, 159,440.30 and 109,166.70

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Solution

The fourth proportional to 115,456.71, 159,440.30 and 109,166.70 is: 150,754.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,456.71 : 159,440.30 = 109,166.70 : x
  2. Step 2: Convert to fraction form
    115,456.71/159,440.30 = 109,166.70/x
  3. Step 3: Cross multiply
    115,456.71x = 159,440.30 × 109,166.70
  4. Step 4: Simplify right side
    115,456.71x = 17,405,571,398.01
  5. Step 5: Solve for x
    x = 17,405,571,398.01/115,456.71
  6. Step 6: Final answer
    x = 150,754.09

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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.