Home / 161,917.97-242,663.72-90,839.25

Finding the Fourth Proportional to 161,917.97, 242,663.72 and 90,839.25

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Solution

The fourth proportional to 161,917.97, 242,663.72 and 90,839.25 is: 136,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,917.97 : 242,663.72 = 90,839.25 : x
  2. Step 2: Convert to fraction form
    161,917.97/242,663.72 = 90,839.25/x
  3. Step 3: Cross multiply
    161,917.97x = 242,663.72 × 90,839.25
  4. Step 4: Simplify right side
    161,917.97x = 22,043,389,872.81
  5. Step 5: Solve for x
    x = 22,043,389,872.81/161,917.97
  6. Step 6: Final answer
    x = 136,139.25

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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.