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Finding the Fourth Proportional to 161,866.05, 223,364.70 and 90,241.80

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Solution

The fourth proportional to 161,866.05, 223,364.70 and 90,241.80 is: 124,527.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,866.05 : 223,364.70 = 90,241.80 : x
  2. Step 2: Convert to fraction form
    161,866.05/223,364.70 = 90,241.80/x
  3. Step 3: Cross multiply
    161,866.05x = 223,364.70 × 90,241.80
  4. Step 4: Simplify right side
    161,866.05x = 20,156,832,584.46
  5. Step 5: Solve for x
    x = 20,156,832,584.46/161,866.05
  6. Step 6: Final answer
    x = 124,527.86

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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.