Home / 100,328.54-138,467.49-62,100.35

Finding the Fourth Proportional to 100,328.54, 138,467.49 and 62,100.35

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Solution

The fourth proportional to 100,328.54, 138,467.49 and 62,100.35 is: 85,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.54 : 138,467.49 = 62,100.35 : x
  2. Step 2: Convert to fraction form
    100,328.54/138,467.49 = 62,100.35/x
  3. Step 3: Cross multiply
    100,328.54x = 138,467.49 × 62,100.35
  4. Step 4: Simplify right side
    100,328.54x = 8,598,879,592.62
  5. Step 5: Solve for x
    x = 8,598,879,592.62/100,328.54
  6. Step 6: Final answer
    x = 85,707.21

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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.