Home / 103,928.21-143,325.28-68,105.21

Finding the Fourth Proportional to 103,928.21, 143,325.28 and 68,105.21

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Solution

The fourth proportional to 103,928.21, 143,325.28 and 68,105.21 is: 93,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,928.21 : 143,325.28 = 68,105.21 : x
  2. Step 2: Convert to fraction form
    103,928.21/143,325.28 = 68,105.21/x
  3. Step 3: Cross multiply
    103,928.21x = 143,325.28 × 68,105.21
  4. Step 4: Simplify right side
    103,928.21x = 9,761,198,292.71
  5. Step 5: Solve for x
    x = 9,761,198,292.71/103,928.21
  6. Step 6: Final answer
    x = 93,922.51

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1.5x scale

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.