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Finding the Fourth Proportional to 111,149.77, 153,372.38 and 63,400.27

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Solution

The fourth proportional to 111,149.77, 153,372.38 and 63,400.27 is: 87,484.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,149.77 : 153,372.38 = 63,400.27 : x
  2. Step 2: Convert to fraction form
    111,149.77/153,372.38 = 63,400.27/x
  3. Step 3: Cross multiply
    111,149.77x = 153,372.38 × 63,400.27
  4. Step 4: Simplify right side
    111,149.77x = 9,723,850,302.54
  5. Step 5: Solve for x
    x = 9,723,850,302.54/111,149.77
  6. Step 6: Final answer
    x = 87,484.21

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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.