Home / 159,531.65-220,153.22-87,911.66

Finding the Fourth Proportional to 159,531.65, 220,153.22 and 87,911.66

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Solution

The fourth proportional to 159,531.65, 220,153.22 and 87,911.66 is: 121,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.65 : 220,153.22 = 87,911.66 : x
  2. Step 2: Convert to fraction form
    159,531.65/220,153.22 = 87,911.66/x
  3. Step 3: Cross multiply
    159,531.65x = 220,153.22 × 87,911.66
  4. Step 4: Simplify right side
    159,531.65x = 19,354,033,923.78
  5. Step 5: Solve for x
    x = 19,354,033,923.78/159,531.65
  6. Step 6: Final answer
    x = 121,317.83

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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.