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Finding the Fourth Proportional to 103,679.33, 143,082.15 and 58,372.89

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Solution

The fourth proportional to 103,679.33, 143,082.15 and 58,372.89 is: 80,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.33 : 143,082.15 = 58,372.89 : x
  2. Step 2: Convert to fraction form
    103,679.33/143,082.15 = 58,372.89/x
  3. Step 3: Cross multiply
    103,679.33x = 143,082.15 × 58,372.89
  4. Step 4: Simplify right side
    103,679.33x = 8,352,117,847.46
  5. Step 5: Solve for x
    x = 8,352,117,847.46/103,679.33
  6. Step 6: Final answer
    x = 80,557.22

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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.