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Finding the Fourth Proportional to 451,154.74, 676,732.62 and 135,611.64

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Solution

The fourth proportional to 451,154.74, 676,732.62 and 135,611.64 is: 203,417.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,154.74 : 676,732.62 = 135,611.64 : x
  2. Step 2: Convert to fraction form
    451,154.74/676,732.62 = 135,611.64/x
  3. Step 3: Cross multiply
    451,154.74x = 676,732.62 × 135,611.64
  4. Step 4: Simplify right side
    451,154.74x = 91,772,820,439.70
  5. Step 5: Solve for x
    x = 91,772,820,439.70/451,154.74
  6. Step 6: Final answer
    x = 203,417.61

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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.