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Finding the Fourth Proportional to 162,840.60, 243,872.10 and 131,736.60

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Solution

The fourth proportional to 162,840.60, 243,872.10 and 131,736.60 is: 197,290.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,840.60 : 243,872.10 = 131,736.60 : x
  2. Step 2: Convert to fraction form
    162,840.60/243,872.10 = 131,736.60/x
  3. Step 3: Cross multiply
    162,840.60x = 243,872.10 × 131,736.60
  4. Step 4: Simplify right side
    162,840.60x = 32,126,881,288.86
  5. Step 5: Solve for x
    x = 32,126,881,288.86/162,840.60
  6. Step 6: Final answer
    x = 197,290.36

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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.