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Finding the Fourth Proportional to 161,173.78, 241,695.06 and 72,403.44

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Solution

The fourth proportional to 161,173.78, 241,695.06 and 72,403.44 is: 108,575.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,173.78 : 241,695.06 = 72,403.44 : x
  2. Step 2: Convert to fraction form
    161,173.78/241,695.06 = 72,403.44/x
  3. Step 3: Cross multiply
    161,173.78x = 241,695.06 × 72,403.44
  4. Step 4: Simplify right side
    161,173.78x = 17,499,553,775.01
  5. Step 5: Solve for x
    x = 17,499,553,775.01/161,173.78
  6. Step 6: Final answer
    x = 108,575.69

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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.