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Finding the Fourth Proportional to 181,980.22, 251,129.26 and 101,405.96

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Solution

The fourth proportional to 181,980.22, 251,129.26 and 101,405.96 is: 139,938.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,980.22 : 251,129.26 = 101,405.96 : x
  2. Step 2: Convert to fraction form
    181,980.22/251,129.26 = 101,405.96/x
  3. Step 3: Cross multiply
    181,980.22x = 251,129.26 × 101,405.96
  4. Step 4: Simplify right side
    181,980.22x = 25,466,003,694.39
  5. Step 5: Solve for x
    x = 25,466,003,694.39/181,980.22
  6. Step 6: Final answer
    x = 139,938.31

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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.