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Finding the Fourth Proportional to 101,885.25, 140,601.92 and 57,173.25

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Solution

The fourth proportional to 101,885.25, 140,601.92 and 57,173.25 is: 78,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,885.25 : 140,601.92 = 57,173.25 : x
  2. Step 2: Convert to fraction form
    101,885.25/140,601.92 = 57,173.25/x
  3. Step 3: Cross multiply
    101,885.25x = 140,601.92 × 57,173.25
  4. Step 4: Simplify right side
    101,885.25x = 8,038,668,436.77
  5. Step 5: Solve for x
    x = 8,038,668,436.77/101,885.25
  6. Step 6: Final answer
    x = 78,899.24

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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.