Home / 156,009.57-234,013.14-81,091.05

Finding the Fourth Proportional to 156,009.57, 234,013.14 and 81,091.05

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Solution

The fourth proportional to 156,009.57, 234,013.14 and 81,091.05 is: 121,635.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,009.57 : 234,013.14 = 81,091.05 : x
  2. Step 2: Convert to fraction form
    156,009.57/234,013.14 = 81,091.05/x
  3. Step 3: Cross multiply
    156,009.57x = 234,013.14 × 81,091.05
  4. Step 4: Simplify right side
    156,009.57x = 18,976,371,236.40
  5. Step 5: Solve for x
    x = 18,976,371,236.40/156,009.57
  6. Step 6: Final answer
    x = 121,635.94

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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.