Home / 103,240.98-154,861.05-68,172.30

Finding the Fourth Proportional to 103,240.98, 154,861.05 and 68,172.30

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Solution

The fourth proportional to 103,240.98, 154,861.05 and 68,172.30 is: 102,258.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,240.98 : 154,861.05 = 68,172.30 : x
  2. Step 2: Convert to fraction form
    103,240.98/154,861.05 = 68,172.30/x
  3. Step 3: Cross multiply
    103,240.98x = 154,861.05 × 68,172.30
  4. Step 4: Simplify right side
    103,240.98x = 10,557,233,958.92
  5. Step 5: Solve for x
    x = 10,557,233,958.92/103,240.98
  6. Step 6: Final answer
    x = 102,258.17

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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.