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Finding the Fourth Proportional to 162,129.44, 243,231.60 and 51,321.44

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Solution

The fourth proportional to 162,129.44, 243,231.60 and 51,321.44 is: 76,994.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,129.44 : 243,231.60 = 51,321.44 : x
  2. Step 2: Convert to fraction form
    162,129.44/243,231.60 = 51,321.44/x
  3. Step 3: Cross multiply
    162,129.44x = 243,231.60 × 51,321.44
  4. Step 4: Simplify right side
    162,129.44x = 12,482,995,965.50
  5. Step 5: Solve for x
    x = 12,482,995,965.50/162,129.44
  6. Step 6: Final answer
    x = 76,994.01

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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.