Home / 215,156.45-322,439.42-136,129.21

Finding the Fourth Proportional to 215,156.45, 322,439.42 and 136,129.21

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Solution

The fourth proportional to 215,156.45, 322,439.42 and 136,129.21 is: 204,007.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,156.45 : 322,439.42 = 136,129.21 : x
  2. Step 2: Convert to fraction form
    215,156.45/322,439.42 = 136,129.21/x
  3. Step 3: Cross multiply
    215,156.45x = 322,439.42 × 136,129.21
  4. Step 4: Simplify right side
    215,156.45x = 43,893,423,051.68
  5. Step 5: Solve for x
    x = 43,893,423,051.68/215,156.45
  6. Step 6: Final answer
    x = 204,007.00

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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.