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Finding the Fourth Proportional to 161,893.48, 223,287.39 and 143,763.28

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Solution

The fourth proportional to 161,893.48, 223,287.39 and 143,763.28 is: 198,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,893.48 : 223,287.39 = 143,763.28 : x
  2. Step 2: Convert to fraction form
    161,893.48/223,287.39 = 143,763.28/x
  3. Step 3: Cross multiply
    161,893.48x = 223,287.39 × 143,763.28
  4. Step 4: Simplify right side
    161,893.48x = 32,100,527,569.04
  5. Step 5: Solve for x
    x = 32,100,527,569.04/161,893.48
  6. Step 6: Final answer
    x = 198,281.78

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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.