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Finding the Fourth Proportional to 161,989.76, 242,956.94 and 43,633.41

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Solution

The fourth proportional to 161,989.76, 242,956.94 and 43,633.41 is: 65,442.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,989.76 : 242,956.94 = 43,633.41 : x
  2. Step 2: Convert to fraction form
    161,989.76/242,956.94 = 43,633.41/x
  3. Step 3: Cross multiply
    161,989.76x = 242,956.94 × 43,633.41
  4. Step 4: Simplify right side
    161,989.76x = 10,601,039,557.20
  5. Step 5: Solve for x
    x = 10,601,039,557.20/161,989.76
  6. Step 6: Final answer
    x = 65,442.65

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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.