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Finding the Fourth Proportional to 161,299, 222,592.62 and 90,643

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Solution

The fourth proportional to 161,299, 222,592.62 and 90,643 is: 125,087.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,299 : 222,592.62 = 90,643 : x
  2. Step 2: Convert to fraction form
    161,299/222,592.62 = 90,643/x
  3. Step 3: Cross multiply
    161,299x = 222,592.62 × 90,643
  4. Step 4: Simplify right side
    161,299x = 20,176,462,854.66
  5. Step 5: Solve for x
    x = 20,176,462,854.66/161,299
  6. Step 6: Final answer
    x = 125,087.34

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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.