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Finding the Fourth Proportional to 161,099.79, 222,317.72 and 89,486.47

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Solution

The fourth proportional to 161,099.79, 222,317.72 and 89,486.47 is: 123,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,099.79 : 222,317.72 = 89,486.47 : x
  2. Step 2: Convert to fraction form
    161,099.79/222,317.72 = 89,486.47/x
  3. Step 3: Cross multiply
    161,099.79x = 222,317.72 × 89,486.47
  4. Step 4: Simplify right side
    161,099.79x = 19,894,427,981.25
  5. Step 5: Solve for x
    x = 19,894,427,981.25/161,099.79
  6. Step 6: Final answer
    x = 123,491.33

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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.