Home / 118,135.82-163,021.50-67,141.81

Finding the Fourth Proportional to 118,135.82, 163,021.50 and 67,141.81

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Solution

The fourth proportional to 118,135.82, 163,021.50 and 67,141.81 is: 92,652.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,135.82 : 163,021.50 = 67,141.81 : x
  2. Step 2: Convert to fraction form
    118,135.82/163,021.50 = 67,141.81/x
  3. Step 3: Cross multiply
    118,135.82x = 163,021.50 × 67,141.81
  4. Step 4: Simplify right side
    118,135.82x = 10,945,558,578.92
  5. Step 5: Solve for x
    x = 10,945,558,578.92/118,135.82
  6. Step 6: Final answer
    x = 92,652.33

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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.