Home / 103,929.94-143,471.01-68,121.46

Finding the Fourth Proportional to 103,929.94, 143,471.01 and 68,121.46

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Solution

The fourth proportional to 103,929.94, 143,471.01 and 68,121.46 is: 94,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.94 : 143,471.01 = 68,121.46 : x
  2. Step 2: Convert to fraction form
    103,929.94/143,471.01 = 68,121.46/x
  3. Step 3: Cross multiply
    103,929.94x = 143,471.01 × 68,121.46
  4. Step 4: Simplify right side
    103,929.94x = 9,773,454,668.87
  5. Step 5: Solve for x
    x = 9,773,454,668.87/103,929.94
  6. Step 6: Final answer
    x = 94,038.88

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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.