Home / 118,991.49-164,196.09-71,243.61

Finding the Fourth Proportional to 118,991.49, 164,196.09 and 71,243.61

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Solution

The fourth proportional to 118,991.49, 164,196.09 and 71,243.61 is: 98,308.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,991.49 : 164,196.09 = 71,243.61 : x
  2. Step 2: Convert to fraction form
    118,991.49/164,196.09 = 71,243.61/x
  3. Step 3: Cross multiply
    118,991.49x = 164,196.09 × 71,243.61
  4. Step 4: Simplify right side
    118,991.49x = 11,697,922,199.48
  5. Step 5: Solve for x
    x = 11,697,922,199.48/118,991.49
  6. Step 6: Final answer
    x = 98,308.90

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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.