Home / 126,664.86-189,905.13-82,335.90

Finding the Fourth Proportional to 126,664.86, 189,905.13 and 82,335.90

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Solution

The fourth proportional to 126,664.86, 189,905.13 and 82,335.90 is: 123,443.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,664.86 : 189,905.13 = 82,335.90 : x
  2. Step 2: Convert to fraction form
    126,664.86/189,905.13 = 82,335.90/x
  3. Step 3: Cross multiply
    126,664.86x = 189,905.13 × 82,335.90
  4. Step 4: Simplify right side
    126,664.86x = 15,636,009,793.17
  5. Step 5: Solve for x
    x = 15,636,009,793.17/126,664.86
  6. Step 6: Final answer
    x = 123,443.94

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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.