Home / 103,136.76-154,705.26-28,257.54

Finding the Fourth Proportional to 103,136.76, 154,705.26 and 28,257.54

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Solution

The fourth proportional to 103,136.76, 154,705.26 and 28,257.54 is: 42,386.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136.76 : 154,705.26 = 28,257.54 : x
  2. Step 2: Convert to fraction form
    103,136.76/154,705.26 = 28,257.54/x
  3. Step 3: Cross multiply
    103,136.76x = 154,705.26 × 28,257.54
  4. Step 4: Simplify right side
    103,136.76x = 4,371,590,072.66
  5. Step 5: Solve for x
    x = 4,371,590,072.66/103,136.76
  6. Step 6: Final answer
    x = 42,386.34

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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.