Home / 159,238.36-219,743.34-87,617.80

Finding the Fourth Proportional to 159,238.36, 219,743.34 and 87,617.80

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Solution

The fourth proportional to 159,238.36, 219,743.34 and 87,617.80 is: 120,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,238.36 : 219,743.34 = 87,617.80 : x
  2. Step 2: Convert to fraction form
    159,238.36/219,743.34 = 87,617.80/x
  3. Step 3: Cross multiply
    159,238.36x = 219,743.34 × 87,617.80
  4. Step 4: Simplify right side
    159,238.36x = 19,253,428,015.45
  5. Step 5: Solve for x
    x = 19,253,428,015.45/159,238.36
  6. Step 6: Final answer
    x = 120,909.48

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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.