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Finding the Fourth Proportional to 103,753.14, 143,190.10 and 63,493.72

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Solution

The fourth proportional to 103,753.14, 143,190.10 and 63,493.72 is: 87,627.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,753.14 : 143,190.10 = 63,493.72 : x
  2. Step 2: Convert to fraction form
    103,753.14/143,190.10 = 63,493.72/x
  3. Step 3: Cross multiply
    103,753.14x = 143,190.10 × 63,493.72
  4. Step 4: Simplify right side
    103,753.14x = 9,091,672,116.17
  5. Step 5: Solve for x
    x = 9,091,672,116.17/103,753.14
  6. Step 6: Final answer
    x = 87,627.92

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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.