Home / 215,156.29-322,439.19-136,129.05

Finding the Fourth Proportional to 215,156.29, 322,439.19 and 136,129.05

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Solution

The fourth proportional to 215,156.29, 322,439.19 and 136,129.05 is: 204,006.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,156.29 : 322,439.19 = 136,129.05 : x
  2. Step 2: Convert to fraction form
    215,156.29/322,439.19 = 136,129.05/x
  3. Step 3: Cross multiply
    215,156.29x = 322,439.19 × 136,129.05
  4. Step 4: Simplify right side
    215,156.29x = 43,893,338,324.63
  5. Step 5: Solve for x
    x = 43,893,338,324.63/215,156.29
  6. Step 6: Final answer
    x = 204,006.76

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1.5x scale

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.