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Finding the Fourth Proportional to 145,171.62, 217,783.08 and 66,293.82

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Solution

The fourth proportional to 145,171.62, 217,783.08 and 66,293.82 is: 99,452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,171.62 : 217,783.08 = 66,293.82 : x
  2. Step 2: Convert to fraction form
    145,171.62/217,783.08 = 66,293.82/x
  3. Step 3: Cross multiply
    145,171.62x = 217,783.08 × 66,293.82
  4. Step 4: Simplify right side
    145,171.62x = 14,437,672,304.57
  5. Step 5: Solve for x
    x = 14,437,672,304.57/145,171.62
  6. Step 6: Final answer
    x = 99,452.44

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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.