Home / 159,583.41-220,221.18-87,961.86

Finding the Fourth Proportional to 159,583.41, 220,221.18 and 87,961.86

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Solution

The fourth proportional to 159,583.41, 220,221.18 and 87,961.86 is: 121,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,583.41 : 220,221.18 = 87,961.86 : x
  2. Step 2: Convert to fraction form
    159,583.41/220,221.18 = 87,961.86/x
  3. Step 3: Cross multiply
    159,583.41x = 220,221.18 × 87,961.86
  4. Step 4: Simplify right side
    159,583.41x = 19,371,064,604.19
  5. Step 5: Solve for x
    x = 19,371,064,604.19/159,583.41
  6. Step 6: Final answer
    x = 121,385.20

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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.