Home / 158,869.31-219,239.39-87,249.33

Finding the Fourth Proportional to 158,869.31, 219,239.39 and 87,249.33

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Solution

The fourth proportional to 158,869.31, 219,239.39 and 87,249.33 is: 120,403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,869.31 : 219,239.39 = 87,249.33 : x
  2. Step 2: Convert to fraction form
    158,869.31/219,239.39 = 87,249.33/x
  3. Step 3: Cross multiply
    158,869.31x = 219,239.39 × 87,249.33
  4. Step 4: Simplify right side
    158,869.31x = 19,128,489,450.86
  5. Step 5: Solve for x
    x = 19,128,489,450.86/158,869.31
  6. Step 6: Final answer
    x = 120,403.93

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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.