Home / 205,650.78-283,796.10-115,005.72

Finding the Fourth Proportional to 205,650.78, 283,796.10 and 115,005.72

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Solution

The fourth proportional to 205,650.78, 283,796.10 and 115,005.72 is: 158,706.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,650.78 : 283,796.10 = 115,005.72 : x
  2. Step 2: Convert to fraction form
    205,650.78/283,796.10 = 115,005.72/x
  3. Step 3: Cross multiply
    205,650.78x = 283,796.10 × 115,005.72
  4. Step 4: Simplify right side
    205,650.78x = 32,638,174,813.69
  5. Step 5: Solve for x
    x = 32,638,174,813.69/205,650.78
  6. Step 6: Final answer
    x = 158,706.79

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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.