Home / 158,869.70-219,239.94-87,249.72

Finding the Fourth Proportional to 158,869.70, 219,239.94 and 87,249.72

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Solution

The fourth proportional to 158,869.70, 219,239.94 and 87,249.72 is: 120,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,869.70 : 219,239.94 = 87,249.72 : x
  2. Step 2: Convert to fraction form
    158,869.70/219,239.94 = 87,249.72/x
  3. Step 3: Cross multiply
    158,869.70x = 219,239.94 × 87,249.72
  4. Step 4: Simplify right side
    158,869.70x = 19,128,623,377.82
  5. Step 5: Solve for x
    x = 19,128,623,377.82/158,869.70
  6. Step 6: Final answer
    x = 120,404.48

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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.