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Finding the Fourth Proportional to 101,219.64, 139,672.50 and 58,769.88

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Solution

The fourth proportional to 101,219.64, 139,672.50 and 58,769.88 is: 81,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,219.64 : 139,672.50 = 58,769.88 : x
  2. Step 2: Convert to fraction form
    101,219.64/139,672.50 = 58,769.88/x
  3. Step 3: Cross multiply
    101,219.64x = 139,672.50 × 58,769.88
  4. Step 4: Simplify right side
    101,219.64x = 8,208,536,064.30
  5. Step 5: Solve for x
    x = 8,208,536,064.30/101,219.64
  6. Step 6: Final answer
    x = 81,096.28

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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.