Home / 112,719.70-169,004.52-67,639.56

Finding the Fourth Proportional to 112,719.70, 169,004.52 and 67,639.56

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Solution

The fourth proportional to 112,719.70, 169,004.52 and 67,639.56 is: 101,414.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,719.70 : 169,004.52 = 67,639.56 : x
  2. Step 2: Convert to fraction form
    112,719.70/169,004.52 = 67,639.56/x
  3. Step 3: Cross multiply
    112,719.70x = 169,004.52 × 67,639.56
  4. Step 4: Simplify right side
    112,719.70x = 11,431,391,370.81
  5. Step 5: Solve for x
    x = 11,431,391,370.81/112,719.70
  6. Step 6: Final answer
    x = 101,414.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.