Home / 159,486.05-220,090.82-87,865.44

Finding the Fourth Proportional to 159,486.05, 220,090.82 and 87,865.44

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Solution

The fourth proportional to 159,486.05, 220,090.82 and 87,865.44 is: 121,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.05 : 220,090.82 = 87,865.44 : x
  2. Step 2: Convert to fraction form
    159,486.05/220,090.82 = 87,865.44/x
  3. Step 3: Cross multiply
    159,486.05x = 220,090.82 × 87,865.44
  4. Step 4: Simplify right side
    159,486.05x = 19,338,376,739.26
  5. Step 5: Solve for x
    x = 19,338,376,739.26/159,486.05
  6. Step 6: Final answer
    x = 121,254.35

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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.