Home / 159,054.22-219,495.18-87,434.43

Finding the Fourth Proportional to 159,054.22, 219,495.18 and 87,434.43

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Solution

The fourth proportional to 159,054.22, 219,495.18 and 87,434.43 is: 120,659.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,054.22 : 219,495.18 = 87,434.43 : x
  2. Step 2: Convert to fraction form
    159,054.22/219,495.18 = 87,434.43/x
  3. Step 3: Cross multiply
    159,054.22x = 219,495.18 × 87,434.43
  4. Step 4: Simplify right side
    159,054.22x = 19,191,435,951.05
  5. Step 5: Solve for x
    x = 19,191,435,951.05/159,054.22
  6. Step 6: Final answer
    x = 120,659.71

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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.