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Finding the Fourth Proportional to 139,157.04, 192,037.29 and 75,495.30

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Solution

The fourth proportional to 139,157.04, 192,037.29 and 75,495.30 is: 104,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,157.04 : 192,037.29 = 75,495.30 : x
  2. Step 2: Convert to fraction form
    139,157.04/192,037.29 = 75,495.30/x
  3. Step 3: Cross multiply
    139,157.04x = 192,037.29 × 75,495.30
  4. Step 4: Simplify right side
    139,157.04x = 14,497,912,819.74
  5. Step 5: Solve for x
    x = 14,497,912,819.74/139,157.04
  6. Step 6: Final answer
    x = 104,183.83

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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.