Home / 159,137.98-219,605.38-87,517.78

Finding the Fourth Proportional to 159,137.98, 219,605.38 and 87,517.78

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Solution

The fourth proportional to 159,137.98, 219,605.38 and 87,517.78 is: 120,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,137.98 : 219,605.38 = 87,517.78 : x
  2. Step 2: Convert to fraction form
    159,137.98/219,605.38 = 87,517.78/x
  3. Step 3: Cross multiply
    159,137.98x = 219,605.38 × 87,517.78
  4. Step 4: Simplify right side
    159,137.98x = 19,219,375,333.66
  5. Step 5: Solve for x
    x = 19,219,375,333.66/159,137.98
  6. Step 6: Final answer
    x = 120,771.77

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1.5x scale

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.