Home / 161,921.80-242,992.05-90,844.30

Finding the Fourth Proportional to 161,921.80, 242,992.05 and 90,844.30

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Solution

The fourth proportional to 161,921.80, 242,992.05 and 90,844.30 is: 136,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,921.80 : 242,992.05 = 90,844.30 : x
  2. Step 2: Convert to fraction form
    161,921.80/242,992.05 = 90,844.30/x
  3. Step 3: Cross multiply
    161,921.80x = 242,992.05 × 90,844.30
  4. Step 4: Simplify right side
    161,921.80x = 22,074,442,687.82
  5. Step 5: Solve for x
    x = 22,074,442,687.82/161,921.80
  6. Step 6: Final answer
    x = 136,327.80

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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.