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Finding the Fourth Proportional to 103,040.73, 155,355.72 and 102,401.03

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Solution

The fourth proportional to 103,040.73, 155,355.72 and 102,401.03 is: 154,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.73 : 155,355.72 = 102,401.03 : x
  2. Step 2: Convert to fraction form
    103,040.73/155,355.72 = 102,401.03/x
  3. Step 3: Cross multiply
    103,040.73x = 155,355.72 × 102,401.03
  4. Step 4: Simplify right side
    103,040.73x = 15,908,585,744.39
  5. Step 5: Solve for x
    x = 15,908,585,744.39/103,040.73
  6. Step 6: Final answer
    x = 154,391.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.