Home / 191,831-264,760.98-120,272.36

Finding the Fourth Proportional to 191,831, 264,760.98 and 120,272.36

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Solution

The fourth proportional to 191,831, 264,760.98 and 120,272.36 is: 165,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,831 : 264,760.98 = 120,272.36 : x
  2. Step 2: Convert to fraction form
    191,831/264,760.98 = 120,272.36/x
  3. Step 3: Cross multiply
    191,831x = 264,760.98 × 120,272.36
  4. Step 4: Simplify right side
    191,831x = 31,843,427,900.51
  5. Step 5: Solve for x
    x = 31,843,427,900.51/191,831
  6. Step 6: Final answer
    x = 165,997.30

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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.