Home / 161,845.20-242,681.40-68,245.20

Finding the Fourth Proportional to 161,845.20, 242,681.40 and 68,245.20

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Solution

The fourth proportional to 161,845.20, 242,681.40 and 68,245.20 is: 102,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,845.20 : 242,681.40 = 68,245.20 : x
  2. Step 2: Convert to fraction form
    161,845.20/242,681.40 = 68,245.20/x
  3. Step 3: Cross multiply
    161,845.20x = 242,681.40 × 68,245.20
  4. Step 4: Simplify right side
    161,845.20x = 16,561,840,679.28
  5. Step 5: Solve for x
    x = 16,561,840,679.28/161,845.20
  6. Step 6: Final answer
    x = 102,331.37

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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.