Home / 215,926.78-297,979.41-120,431.02

Finding the Fourth Proportional to 215,926.78, 297,979.41 and 120,431.02

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Solution

The fourth proportional to 215,926.78, 297,979.41 and 120,431.02 is: 166,195.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,926.78 : 297,979.41 = 120,431.02 : x
  2. Step 2: Convert to fraction form
    215,926.78/297,979.41 = 120,431.02/x
  3. Step 3: Cross multiply
    215,926.78x = 297,979.41 × 120,431.02
  4. Step 4: Simplify right side
    215,926.78x = 35,885,964,285.30
  5. Step 5: Solve for x
    x = 35,885,964,285.30/215,926.78
  6. Step 6: Final answer
    x = 166,195.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.