Home / 215,155.13-322,437.45-136,127.89

Finding the Fourth Proportional to 215,155.13, 322,437.45 and 136,127.89

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Solution

The fourth proportional to 215,155.13, 322,437.45 and 136,127.89 is: 204,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,155.13 : 322,437.45 = 136,127.89 : x
  2. Step 2: Convert to fraction form
    215,155.13/322,437.45 = 136,127.89/x
  3. Step 3: Cross multiply
    215,155.13x = 322,437.45 × 136,127.89
  4. Step 4: Simplify right side
    215,155.13x = 43,892,728,919.39
  5. Step 5: Solve for x
    x = 43,892,728,919.39/215,155.13
  6. Step 6: Final answer
    x = 204,005.03

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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.