Home / 139,742.91-192,845.30-76,080.96

Finding the Fourth Proportional to 139,742.91, 192,845.30 and 76,080.96

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Solution

The fourth proportional to 139,742.91, 192,845.30 and 76,080.96 is: 104,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.91 : 192,845.30 = 76,080.96 : x
  2. Step 2: Convert to fraction form
    139,742.91/192,845.30 = 76,080.96/x
  3. Step 3: Cross multiply
    139,742.91x = 192,845.30 × 76,080.96
  4. Step 4: Simplify right side
    139,742.91x = 14,671,855,175.08
  5. Step 5: Solve for x
    x = 14,671,855,175.08/139,742.91
  6. Step 6: Final answer
    x = 104,991.77

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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.