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Finding the Fourth Proportional to 161,539.88, 222,921.34 and 101,143.82

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Solution

The fourth proportional to 161,539.88, 222,921.34 and 101,143.82 is: 139,576.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,539.88 : 222,921.34 = 101,143.82 : x
  2. Step 2: Convert to fraction form
    161,539.88/222,921.34 = 101,143.82/x
  3. Step 3: Cross multiply
    161,539.88x = 222,921.34 × 101,143.82
  4. Step 4: Simplify right side
    161,539.88x = 22,547,116,191.56
  5. Step 5: Solve for x
    x = 22,547,116,191.56/161,539.88
  6. Step 6: Final answer
    x = 139,576.16

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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.