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Finding the Fourth Proportional to 161,303.22, 222,585.78 and 89,678.88

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Solution

The fourth proportional to 161,303.22, 222,585.78 and 89,678.88 is: 123,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,303.22 : 222,585.78 = 89,678.88 : x
  2. Step 2: Convert to fraction form
    161,303.22/222,585.78 = 89,678.88/x
  3. Step 3: Cross multiply
    161,303.22x = 222,585.78 × 89,678.88
  4. Step 4: Simplify right side
    161,303.22x = 19,961,243,454.33
  5. Step 5: Solve for x
    x = 19,961,243,454.33/161,303.22
  6. Step 6: Final answer
    x = 123,749.81

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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.