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Finding the Fourth Proportional to 162,663.40, 243,922.20 and 73,871.20

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Solution

The fourth proportional to 162,663.40, 243,922.20 and 73,871.20 is: 110,773.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,663.40 : 243,922.20 = 73,871.20 : x
  2. Step 2: Convert to fraction form
    162,663.40/243,922.20 = 73,871.20/x
  3. Step 3: Cross multiply
    162,663.40x = 243,922.20 × 73,871.20
  4. Step 4: Simplify right side
    162,663.40x = 18,018,825,620.64
  5. Step 5: Solve for x
    x = 18,018,825,620.64/162,663.40
  6. Step 6: Final answer
    x = 110,773.69

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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.