Home / 159,531.82-220,155.39-87,914.41

Finding the Fourth Proportional to 159,531.82, 220,155.39 and 87,914.41

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Solution

The fourth proportional to 159,531.82, 220,155.39 and 87,914.41 is: 121,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.82 : 220,155.39 = 87,914.41 : x
  2. Step 2: Convert to fraction form
    159,531.82/220,155.39 = 87,914.41/x
  3. Step 3: Cross multiply
    159,531.82x = 220,155.39 × 87,914.41
  4. Step 4: Simplify right side
    159,531.82x = 19,354,830,669.78
  5. Step 5: Solve for x
    x = 19,354,830,669.78/159,531.82
  6. Step 6: Final answer
    x = 121,322.70

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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.