Home / 159,003.36-219,422.12-87,381.86

Finding the Fourth Proportional to 159,003.36, 219,422.12 and 87,381.86

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Solution

The fourth proportional to 159,003.36, 219,422.12 and 87,381.86 is: 120,585.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,003.36 : 219,422.12 = 87,381.86 : x
  2. Step 2: Convert to fraction form
    159,003.36/219,422.12 = 87,381.86/x
  3. Step 3: Cross multiply
    159,003.36x = 219,422.12 × 87,381.86
  4. Step 4: Simplify right side
    159,003.36x = 19,173,511,436.72
  5. Step 5: Solve for x
    x = 19,173,511,436.72/159,003.36
  6. Step 6: Final answer
    x = 120,585.57

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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.