Home / 103,892.44-155,799.78-81,964.12

Finding the Fourth Proportional to 103,892.44, 155,799.78 and 81,964.12

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Solution

The fourth proportional to 103,892.44, 155,799.78 and 81,964.12 is: 122,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,892.44 : 155,799.78 = 81,964.12 : x
  2. Step 2: Convert to fraction form
    103,892.44/155,799.78 = 81,964.12/x
  3. Step 3: Cross multiply
    103,892.44x = 155,799.78 × 81,964.12
  4. Step 4: Simplify right side
    103,892.44x = 12,769,991,863.89
  5. Step 5: Solve for x
    x = 12,769,991,863.89/103,892.44
  6. Step 6: Final answer
    x = 122,915.51

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1.5x scale

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.