Home / 158,790.60-219,131.94-87,171.18

Finding the Fourth Proportional to 158,790.60, 219,131.94 and 87,171.18

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Solution

The fourth proportional to 158,790.60, 219,131.94 and 87,171.18 is: 120,296.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,790.60 : 219,131.94 = 87,171.18 : x
  2. Step 2: Convert to fraction form
    158,790.60/219,131.94 = 87,171.18/x
  3. Step 3: Cross multiply
    158,790.60x = 219,131.94 × 87,171.18
  4. Step 4: Simplify right side
    158,790.60x = 19,101,989,785.49
  5. Step 5: Solve for x
    x = 19,101,989,785.49/158,790.60
  6. Step 6: Final answer
    x = 120,296.73

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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.