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Finding the Fourth Proportional to 161,366, 222,685.08 and 90,710

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Solution

The fourth proportional to 161,366, 222,685.08 and 90,710 is: 125,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,366 : 222,685.08 = 90,710 : x
  2. Step 2: Convert to fraction form
    161,366/222,685.08 = 90,710/x
  3. Step 3: Cross multiply
    161,366x = 222,685.08 × 90,710
  4. Step 4: Simplify right side
    161,366x = 20,199,763,606.80
  5. Step 5: Solve for x
    x = 20,199,763,606.80/161,366
  6. Step 6: Final answer
    x = 125,179.80

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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.