Home / 159,054.12-219,494.94-87,434.59

Finding the Fourth Proportional to 159,054.12, 219,494.94 and 87,434.59

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Solution

The fourth proportional to 159,054.12, 219,494.94 and 87,434.59 is: 120,659.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,054.12 : 219,494.94 = 87,434.59 : x
  2. Step 2: Convert to fraction form
    159,054.12/219,494.94 = 87,434.59/x
  3. Step 3: Cross multiply
    159,054.12x = 219,494.94 × 87,434.59
  4. Step 4: Simplify right side
    159,054.12x = 19,191,450,085.97
  5. Step 5: Solve for x
    x = 19,191,450,085.97/159,054.12
  6. Step 6: Final answer
    x = 120,659.87

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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.