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Finding the Fourth Proportional to 161,322, 222,624.36 and 90,666

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Solution

The fourth proportional to 161,322, 222,624.36 and 90,666 is: 125,119.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,322 : 222,624.36 = 90,666 : x
  2. Step 2: Convert to fraction form
    161,322/222,624.36 = 90,666/x
  3. Step 3: Cross multiply
    161,322x = 222,624.36 × 90,666
  4. Step 4: Simplify right side
    161,322x = 20,184,460,223.76
  5. Step 5: Solve for x
    x = 20,184,460,223.76/161,322
  6. Step 6: Final answer
    x = 125,119.08

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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.