Home / 110,915.16-166,438.64-40,843.68

Finding the Fourth Proportional to 110,915.16, 166,438.64 and 40,843.68

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Solution

The fourth proportional to 110,915.16, 166,438.64 and 40,843.68 is: 61,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,915.16 : 166,438.64 = 40,843.68 : x
  2. Step 2: Convert to fraction form
    110,915.16/166,438.64 = 40,843.68/x
  3. Step 3: Cross multiply
    110,915.16x = 166,438.64 × 40,843.68
  4. Step 4: Simplify right side
    110,915.16x = 6,797,966,551.80
  5. Step 5: Solve for x
    x = 6,797,966,551.80/110,915.16
  6. Step 6: Final answer
    x = 61,289.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.