Home / 115,920.35-159,968.22-64,932.91

Finding the Fourth Proportional to 115,920.35, 159,968.22 and 64,932.91

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Solution

The fourth proportional to 115,920.35, 159,968.22 and 64,932.91 is: 89,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920.35 : 159,968.22 = 64,932.91 : x
  2. Step 2: Convert to fraction form
    115,920.35/159,968.22 = 64,932.91/x
  3. Step 3: Cross multiply
    115,920.35x = 159,968.22 × 64,932.91
  4. Step 4: Simplify right side
    115,920.35x = 10,387,201,388.70
  5. Step 5: Solve for x
    x = 10,387,201,388.70/115,920.35
  6. Step 6: Final answer
    x = 89,606.37

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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.