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Finding the Fourth Proportional to 145,175.44, 217,788.54 and 66,297.64

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Solution

The fourth proportional to 145,175.44, 217,788.54 and 66,297.64 is: 99,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,175.44 : 217,788.54 = 66,297.64 : x
  2. Step 2: Convert to fraction form
    145,175.44/217,788.54 = 66,297.64/x
  3. Step 3: Cross multiply
    145,175.44x = 217,788.54 × 66,297.64
  4. Step 4: Simplify right side
    145,175.44x = 14,438,866,221.05
  5. Step 5: Solve for x
    x = 14,438,866,221.05/145,175.44
  6. Step 6: Final answer
    x = 99,458.05

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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.