Home / 103,904.44-155,817.78-81,976.12

Finding the Fourth Proportional to 103,904.44, 155,817.78 and 81,976.12

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Solution

The fourth proportional to 103,904.44, 155,817.78 and 81,976.12 is: 122,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,904.44 : 155,817.78 = 81,976.12 : x
  2. Step 2: Convert to fraction form
    103,904.44/155,817.78 = 81,976.12/x
  3. Step 3: Cross multiply
    103,904.44x = 155,817.78 × 81,976.12
  4. Step 4: Simplify right side
    103,904.44x = 12,773,337,031.41
  5. Step 5: Solve for x
    x = 12,773,337,031.41/103,904.44
  6. Step 6: Final answer
    x = 122,933.51

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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.