Home / 103,623.78-155,369.10-68,043.08

Finding the Fourth Proportional to 103,623.78, 155,369.10 and 68,043.08

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Solution

The fourth proportional to 103,623.78, 155,369.10 and 68,043.08 is: 102,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.78 : 155,369.10 = 68,043.08 : x
  2. Step 2: Convert to fraction form
    103,623.78/155,369.10 = 68,043.08/x
  3. Step 3: Cross multiply
    103,623.78x = 155,369.10 × 68,043.08
  4. Step 4: Simplify right side
    103,623.78x = 10,571,792,100.83
  5. Step 5: Solve for x
    x = 10,571,792,100.83/103,623.78
  6. Step 6: Final answer
    x = 102,020.91

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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.