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Finding the Fourth Proportional to 111,427.85, 153,754.17 and 63,671.97

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Solution

The fourth proportional to 111,427.85, 153,754.17 and 63,671.97 is: 87,858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,427.85 : 153,754.17 = 63,671.97 : x
  2. Step 2: Convert to fraction form
    111,427.85/153,754.17 = 63,671.97/x
  3. Step 3: Cross multiply
    111,427.85x = 153,754.17 × 63,671.97
  4. Step 4: Simplify right side
    111,427.85x = 9,789,831,237.42
  5. Step 5: Solve for x
    x = 9,789,831,237.42/111,427.85
  6. Step 6: Final answer
    x = 87,858.03

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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.