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Finding the Fourth Proportional to 162,405.48, 243,628.02 and 68,879.64

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Solution

The fourth proportional to 162,405.48, 243,628.02 and 68,879.64 is: 103,327.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,405.48 : 243,628.02 = 68,879.64 : x
  2. Step 2: Convert to fraction form
    162,405.48/243,628.02 = 68,879.64/x
  3. Step 3: Cross multiply
    162,405.48x = 243,628.02 × 68,879.64
  4. Step 4: Simplify right side
    162,405.48x = 16,781,010,311.51
  5. Step 5: Solve for x
    x = 16,781,010,311.51/162,405.48
  6. Step 6: Final answer
    x = 103,327.86

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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.