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Finding the Fourth Proportional to 161,978,679.60, 242,989,331.40 and 59,814,481.20

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Solution

The fourth proportional to 161,978,679.60, 242,989,331.40 and 59,814,481.20 is: 89,729,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,978,679.60 : 242,989,331.40 = 59,814,481.20 : x
  2. Step 2: Convert to fraction form
    161,978,679.60/242,989,331.40 = 59,814,481.20/x
  3. Step 3: Cross multiply
    161,978,679.60x = 242,989,331.40 × 59,814,481.20
  4. Step 4: Simplify right side
    161,978,679.60x = 14,534,280,794,825,870
  5. Step 5: Solve for x
    x = 14,534,280,794,825,870/161,978,679.60
  6. Step 6: Final answer
    x = 89,729,591.76

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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.