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Finding the Fourth Proportional to 161,812, 223,308.22 and 90,192.52

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Solution

The fourth proportional to 161,812, 223,308.22 and 90,192.52 is: 124,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,812 : 223,308.22 = 90,192.52 : x
  2. Step 2: Convert to fraction form
    161,812/223,308.22 = 90,192.52/x
  3. Step 3: Cross multiply
    161,812x = 223,308.22 × 90,192.52
  4. Step 4: Simplify right side
    161,812x = 20,140,731,098.51
  5. Step 5: Solve for x
    x = 20,140,731,098.51/161,812
  6. Step 6: Final answer
    x = 124,469.95

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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.