Home / 111,388.06-153,723.66-63,640.38

Finding the Fourth Proportional to 111,388.06, 153,723.66 and 63,640.38

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Solution

The fourth proportional to 111,388.06, 153,723.66 and 63,640.38 is: 87,828.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,388.06 : 153,723.66 = 63,640.38 : x
  2. Step 2: Convert to fraction form
    111,388.06/153,723.66 = 63,640.38/x
  3. Step 3: Cross multiply
    111,388.06x = 153,723.66 × 63,640.38
  4. Step 4: Simplify right side
    111,388.06x = 9,783,032,475.20
  5. Step 5: Solve for x
    x = 9,783,032,475.20/111,388.06
  6. Step 6: Final answer
    x = 87,828.38

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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.