Home / 115,923.30-159,976.17-64,935.60

Finding the Fourth Proportional to 115,923.30, 159,976.17 and 64,935.60

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Solution

The fourth proportional to 115,923.30, 159,976.17 and 64,935.60 is: 89,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,923.30 : 159,976.17 = 64,935.60 : x
  2. Step 2: Convert to fraction form
    115,923.30/159,976.17 = 64,935.60/x
  3. Step 3: Cross multiply
    115,923.30x = 159,976.17 × 64,935.60
  4. Step 4: Simplify right side
    115,923.30x = 10,388,148,584.65
  5. Step 5: Solve for x
    x = 10,388,148,584.65/115,923.30
  6. Step 6: Final answer
    x = 89,612.26

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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.