Home / 111,400.38-153,743.67-63,660.87

Finding the Fourth Proportional to 111,400.38, 153,743.67 and 63,660.87

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Solution

The fourth proportional to 111,400.38, 153,743.67 and 63,660.87 is: 87,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,400.38 : 153,743.67 = 63,660.87 : x
  2. Step 2: Convert to fraction form
    111,400.38/153,743.67 = 63,660.87/x
  3. Step 3: Cross multiply
    111,400.38x = 153,743.67 × 63,660.87
  4. Step 4: Simplify right side
    111,400.38x = 9,787,455,789.19
  5. Step 5: Solve for x
    x = 9,787,455,789.19/111,400.38
  6. Step 6: Final answer
    x = 87,858.37

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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.