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Finding the Fourth Proportional to 103,750.80, 143,174.22 and 58,428.60

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Solution

The fourth proportional to 103,750.80, 143,174.22 and 58,428.60 is: 80,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,750.80 : 143,174.22 = 58,428.60 : x
  2. Step 2: Convert to fraction form
    103,750.80/143,174.22 = 58,428.60/x
  3. Step 3: Cross multiply
    103,750.80x = 143,174.22 × 58,428.60
  4. Step 4: Simplify right side
    103,750.80x = 8,365,469,230.69
  5. Step 5: Solve for x
    x = 8,365,469,230.69/103,750.80
  6. Step 6: Final answer
    x = 80,630.41

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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.