Home / 139,815.45-192,949.08-76,157.34

Finding the Fourth Proportional to 139,815.45, 192,949.08 and 76,157.34

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Solution

The fourth proportional to 139,815.45, 192,949.08 and 76,157.34 is: 105,099.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,815.45 : 192,949.08 = 76,157.34 : x
  2. Step 2: Convert to fraction form
    139,815.45/192,949.08 = 76,157.34/x
  3. Step 3: Cross multiply
    139,815.45x = 192,949.08 × 76,157.34
  4. Step 4: Simplify right side
    139,815.45x = 14,694,488,688.25
  5. Step 5: Solve for x
    x = 14,694,488,688.25/139,815.45
  6. Step 6: Final answer
    x = 105,099.18

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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.