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Finding the Fourth Proportional to 161,278.50, 222,553.80 and 89,655.87

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Solution

The fourth proportional to 161,278.50, 222,553.80 and 89,655.87 is: 123,719.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,278.50 : 222,553.80 = 89,655.87 : x
  2. Step 2: Convert to fraction form
    161,278.50/222,553.80 = 89,655.87/x
  3. Step 3: Cross multiply
    161,278.50x = 222,553.80 × 89,655.87
  4. Step 4: Simplify right side
    161,278.50x = 19,953,254,560.81
  5. Step 5: Solve for x
    x = 19,953,254,560.81/161,278.50
  6. Step 6: Final answer
    x = 123,719.25

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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.