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Finding the Fourth Proportional to 161,813.96, 223,310.18 and 90,193.96

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Solution

The fourth proportional to 161,813.96, 223,310.18 and 90,193.96 is: 124,471.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,813.96 : 223,310.18 = 90,193.96 : x
  2. Step 2: Convert to fraction form
    161,813.96/223,310.18 = 90,193.96/x
  3. Step 3: Cross multiply
    161,813.96x = 223,310.18 × 90,193.96
  4. Step 4: Simplify right side
    161,813.96x = 20,141,229,442.51
  5. Step 5: Solve for x
    x = 20,141,229,442.51/161,813.96
  6. Step 6: Final answer
    x = 124,471.52

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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.