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Finding the Fourth Proportional to 156,134, 234,207.48 and 45,326

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Solution

The fourth proportional to 156,134, 234,207.48 and 45,326 is: 67,990.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,134 : 234,207.48 = 45,326 : x
  2. Step 2: Convert to fraction form
    156,134/234,207.48 = 45,326/x
  3. Step 3: Cross multiply
    156,134x = 234,207.48 × 45,326
  4. Step 4: Simplify right side
    156,134x = 10,615,688,238.48
  5. Step 5: Solve for x
    x = 10,615,688,238.48/156,134
  6. Step 6: Final answer
    x = 67,990.88

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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.