Home / 117,286.65-161,811.88-77,022.77

Finding the Fourth Proportional to 117,286.65, 161,811.88 and 77,022.77

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Solution

The fourth proportional to 117,286.65, 161,811.88 and 77,022.77 is: 106,262.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,286.65 : 161,811.88 = 77,022.77 : x
  2. Step 2: Convert to fraction form
    117,286.65/161,811.88 = 77,022.77/x
  3. Step 3: Cross multiply
    117,286.65x = 161,811.88 × 77,022.77
  4. Step 4: Simplify right side
    117,286.65x = 12,463,198,214.89
  5. Step 5: Solve for x
    x = 12,463,198,214.89/117,286.65
  6. Step 6: Final answer
    x = 106,262.72

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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.