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Finding the Fourth Proportional to 161,983.92, 223,537.17 and 90,363.88

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Solution

The fourth proportional to 161,983.92, 223,537.17 and 90,363.88 is: 124,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,983.92 : 223,537.17 = 90,363.88 : x
  2. Step 2: Convert to fraction form
    161,983.92/223,537.17 = 90,363.88/x
  3. Step 3: Cross multiply
    161,983.92x = 223,537.17 × 90,363.88
  4. Step 4: Simplify right side
    161,983.92x = 20,199,686,005.42
  5. Step 5: Solve for x
    x = 20,199,686,005.42/161,983.92
  6. Step 6: Final answer
    x = 124,701.80

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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.