Home / 189,809.47-261,977.12-157,947.31

Finding the Fourth Proportional to 189,809.47, 261,977.12 and 157,947.31

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Solution

The fourth proportional to 189,809.47, 261,977.12 and 157,947.31 is: 218,000.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,809.47 : 261,977.12 = 157,947.31 : x
  2. Step 2: Convert to fraction form
    189,809.47/261,977.12 = 157,947.31/x
  3. Step 3: Cross multiply
    189,809.47x = 261,977.12 × 157,947.31
  4. Step 4: Simplify right side
    189,809.47x = 41,378,580,595.81
  5. Step 5: Solve for x
    x = 41,378,580,595.81/189,809.47
  6. Step 6: Final answer
    x = 218,000.61

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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.