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Finding the Fourth Proportional to 161,877.21, 223,396.97 and 90,269.97

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Solution

The fourth proportional to 161,877.21, 223,396.97 and 90,269.97 is: 124,576.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,877.21 : 223,396.97 = 90,269.97 : x
  2. Step 2: Convert to fraction form
    161,877.21/223,396.97 = 90,269.97/x
  3. Step 3: Cross multiply
    161,877.21x = 223,396.97 × 90,269.97
  4. Step 4: Simplify right side
    161,877.21x = 20,166,037,328.64
  5. Step 5: Solve for x
    x = 20,166,037,328.64/161,877.21
  6. Step 6: Final answer
    x = 124,576.14

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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.