Home / 161,816.20-242,637.90-68,216.20

Finding the Fourth Proportional to 161,816.20, 242,637.90 and 68,216.20

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Solution

The fourth proportional to 161,816.20, 242,637.90 and 68,216.20 is: 102,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,816.20 : 242,637.90 = 68,216.20 : x
  2. Step 2: Convert to fraction form
    161,816.20/242,637.90 = 68,216.20/x
  3. Step 3: Cross multiply
    161,816.20x = 242,637.90 × 68,216.20
  4. Step 4: Simplify right side
    161,816.20x = 16,551,835,513.98
  5. Step 5: Solve for x
    x = 16,551,835,513.98/161,816.20
  6. Step 6: Final answer
    x = 102,287.88

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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.