Home / 159,435.14-220,017.60-87,821.82

Finding the Fourth Proportional to 159,435.14, 220,017.60 and 87,821.82

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Solution

The fourth proportional to 159,435.14, 220,017.60 and 87,821.82 is: 121,192.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,435.14 : 220,017.60 = 87,821.82 : x
  2. Step 2: Convert to fraction form
    159,435.14/220,017.60 = 87,821.82/x
  3. Step 3: Cross multiply
    159,435.14x = 220,017.60 × 87,821.82
  4. Step 4: Simplify right side
    159,435.14x = 19,322,346,064.03
  5. Step 5: Solve for x
    x = 19,322,346,064.03/159,435.14
  6. Step 6: Final answer
    x = 121,192.52

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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.