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Finding the Fourth Proportional to 162,189.54, 223,808.67 and 90,565.29

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Solution

The fourth proportional to 162,189.54, 223,808.67 and 90,565.29 is: 124,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,189.54 : 223,808.67 = 90,565.29 : x
  2. Step 2: Convert to fraction form
    162,189.54/223,808.67 = 90,565.29/x
  3. Step 3: Cross multiply
    162,189.54x = 223,808.67 × 90,565.29
  4. Step 4: Simplify right side
    162,189.54x = 20,269,297,103.06
  5. Step 5: Solve for x
    x = 20,269,297,103.06/162,189.54
  6. Step 6: Final answer
    x = 124,972.90

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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.