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Finding the Fourth Proportional to 161,301, 222,595.38 and 90,645

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Solution

The fourth proportional to 161,301, 222,595.38 and 90,645 is: 125,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,301 : 222,595.38 = 90,645 : x
  2. Step 2: Convert to fraction form
    161,301/222,595.38 = 90,645/x
  3. Step 3: Cross multiply
    161,301x = 222,595.38 × 90,645
  4. Step 4: Simplify right side
    161,301x = 20,177,158,220.10
  5. Step 5: Solve for x
    x = 20,177,158,220.10/161,301
  6. Step 6: Final answer
    x = 125,090.10

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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.