Home / 108,054.35-161,855.48-86,879.73

Finding the Fourth Proportional to 108,054.35, 161,855.48 and 86,879.73

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Solution

The fourth proportional to 108,054.35, 161,855.48 and 86,879.73 is: 130,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,054.35 : 161,855.48 = 86,879.73 : x
  2. Step 2: Convert to fraction form
    108,054.35/161,855.48 = 86,879.73/x
  3. Step 3: Cross multiply
    108,054.35x = 161,855.48 × 86,879.73
  4. Step 4: Simplify right side
    108,054.35x = 14,061,959,967.02
  5. Step 5: Solve for x
    x = 14,061,959,967.02/108,054.35
  6. Step 6: Final answer
    x = 130,137.85

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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.