Home / 189,680.22-261,755.64-103,637.37

Finding the Fourth Proportional to 189,680.22, 261,755.64 and 103,637.37

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Solution

The fourth proportional to 189,680.22, 261,755.64 and 103,637.37 is: 143,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,680.22 : 261,755.64 = 103,637.37 : x
  2. Step 2: Convert to fraction form
    189,680.22/261,755.64 = 103,637.37/x
  3. Step 3: Cross multiply
    189,680.22x = 261,755.64 × 103,637.37
  4. Step 4: Simplify right side
    189,680.22x = 27,127,666,112.27
  5. Step 5: Solve for x
    x = 27,127,666,112.27/189,680.22
  6. Step 6: Final answer
    x = 143,017.90

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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.