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Finding the Fourth Proportional to 162,407.48, 243,631.02 and 68,881.64

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Solution

The fourth proportional to 162,407.48, 243,631.02 and 68,881.64 is: 103,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,407.48 : 243,631.02 = 68,881.64 : x
  2. Step 2: Convert to fraction form
    162,407.48/243,631.02 = 68,881.64/x
  3. Step 3: Cross multiply
    162,407.48x = 243,631.02 × 68,881.64
  4. Step 4: Simplify right side
    162,407.48x = 16,781,704,212.47
  5. Step 5: Solve for x
    x = 16,781,704,212.47/162,407.48
  6. Step 6: Final answer
    x = 103,330.86

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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.