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Finding the Fourth Proportional to 171,113.53, 256,706.93 and 51,179.89

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Solution

The fourth proportional to 171,113.53, 256,706.93 and 51,179.89 is: 76,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,113.53 : 256,706.93 = 51,179.89 : x
  2. Step 2: Convert to fraction form
    171,113.53/256,706.93 = 51,179.89/x
  3. Step 3: Cross multiply
    171,113.53x = 256,706.93 × 51,179.89
  4. Step 4: Simplify right side
    171,113.53x = 13,138,232,439.64
  5. Step 5: Solve for x
    x = 13,138,232,439.64/171,113.53
  6. Step 6: Final answer
    x = 76,780.79

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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.