Home / 111,391.06-153,727.80-63,643.38

Finding the Fourth Proportional to 111,391.06, 153,727.80 and 63,643.38

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Solution

The fourth proportional to 111,391.06, 153,727.80 and 63,643.38 is: 87,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,391.06 : 153,727.80 = 63,643.38 : x
  2. Step 2: Convert to fraction form
    111,391.06/153,727.80 = 63,643.38/x
  3. Step 3: Cross multiply
    111,391.06x = 153,727.80 × 63,643.38
  4. Step 4: Simplify right side
    111,391.06x = 9,783,756,791.96
  5. Step 5: Solve for x
    x = 9,783,756,791.96/111,391.06
  6. Step 6: Final answer
    x = 87,832.51

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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.