Home / 161,767.80-242,761.05-90,690.30

Finding the Fourth Proportional to 161,767.80, 242,761.05 and 90,690.30

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Solution

The fourth proportional to 161,767.80, 242,761.05 and 90,690.30 is: 136,096.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,767.80 : 242,761.05 = 90,690.30 : x
  2. Step 2: Convert to fraction form
    161,767.80/242,761.05 = 90,690.30/x
  3. Step 3: Cross multiply
    161,767.80x = 242,761.05 × 90,690.30
  4. Step 4: Simplify right side
    161,767.80x = 22,016,072,452.82
  5. Step 5: Solve for x
    x = 22,016,072,452.82/161,767.80
  6. Step 6: Final answer
    x = 136,096.75

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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.