Home / 186,394.37-279,689.96-81,221.54

Finding the Fourth Proportional to 186,394.37, 279,689.96 and 81,221.54

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Solution

The fourth proportional to 186,394.37, 279,689.96 and 81,221.54 is: 121,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,394.37 : 279,689.96 = 81,221.54 : x
  2. Step 2: Convert to fraction form
    186,394.37/279,689.96 = 81,221.54/x
  3. Step 3: Cross multiply
    186,394.37x = 279,689.96 × 81,221.54
  4. Step 4: Simplify right side
    186,394.37x = 22,716,848,078.34
  5. Step 5: Solve for x
    x = 22,716,848,078.34/186,394.37
  6. Step 6: Final answer
    x = 121,875.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.