Home / 158,629.82-218,915.26-87,012.86

Finding the Fourth Proportional to 158,629.82, 218,915.26 and 87,012.86

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Solution

The fourth proportional to 158,629.82, 218,915.26 and 87,012.86 is: 120,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,629.82 : 218,915.26 = 87,012.86 : x
  2. Step 2: Convert to fraction form
    158,629.82/218,915.26 = 87,012.86/x
  3. Step 3: Cross multiply
    158,629.82x = 218,915.26 × 87,012.86
  4. Step 4: Simplify right side
    158,629.82x = 19,048,442,870.24
  5. Step 5: Solve for x
    x = 19,048,442,870.24/158,629.82
  6. Step 6: Final answer
    x = 120,081.10

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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.