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Finding the Fourth Proportional to 145,467.78, 218,201.67 and 45,635.96

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Solution

The fourth proportional to 145,467.78, 218,201.67 and 45,635.96 is: 68,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,467.78 : 218,201.67 = 45,635.96 : x
  2. Step 2: Convert to fraction form
    145,467.78/218,201.67 = 45,635.96/x
  3. Step 3: Cross multiply
    145,467.78x = 218,201.67 × 45,635.96
  4. Step 4: Simplify right side
    145,467.78x = 9,957,841,593.04
  5. Step 5: Solve for x
    x = 9,957,841,593.04/145,467.78
  6. Step 6: Final answer
    x = 68,453.93

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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.