Home / 189,428.96-261,410.27-103,387.11

Finding the Fourth Proportional to 189,428.96, 261,410.27 and 103,387.11

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Solution

The fourth proportional to 189,428.96, 261,410.27 and 103,387.11 is: 142,673.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,428.96 : 261,410.27 = 103,387.11 : x
  2. Step 2: Convert to fraction form
    189,428.96/261,410.27 = 103,387.11/x
  3. Step 3: Cross multiply
    189,428.96x = 261,410.27 × 103,387.11
  4. Step 4: Simplify right side
    189,428.96x = 27,026,451,822.68
  5. Step 5: Solve for x
    x = 27,026,451,822.68/189,428.96
  6. Step 6: Final answer
    x = 142,673.29

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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.