Home / 103,929.21-143,326.66-68,106.21

Finding the Fourth Proportional to 103,929.21, 143,326.66 and 68,106.21

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Solution

The fourth proportional to 103,929.21, 143,326.66 and 68,106.21 is: 93,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.21 : 143,326.66 = 68,106.21 : x
  2. Step 2: Convert to fraction form
    103,929.21/143,326.66 = 68,106.21/x
  3. Step 3: Cross multiply
    103,929.21x = 143,326.66 × 68,106.21
  4. Step 4: Simplify right side
    103,929.21x = 9,761,435,604.56
  5. Step 5: Solve for x
    x = 9,761,435,604.56/103,929.21
  6. Step 6: Final answer
    x = 93,923.89

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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.