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Finding the Fourth Proportional to 161,645.99, 223,078.38 and 90,026

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Solution

The fourth proportional to 161,645.99, 223,078.38 and 90,026 is: 124,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,645.99 : 223,078.38 = 90,026 : x
  2. Step 2: Convert to fraction form
    161,645.99/223,078.38 = 90,026/x
  3. Step 3: Cross multiply
    161,645.99x = 223,078.38 × 90,026
  4. Step 4: Simplify right side
    161,645.99x = 20,082,854,237.88
  5. Step 5: Solve for x
    x = 20,082,854,237.88/161,645.99
  6. Step 6: Final answer
    x = 124,239.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.