Home / 139,721.34-192,388.44-105,316.04

Finding the Fourth Proportional to 139,721.34, 192,388.44 and 105,316.04

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Solution

The fourth proportional to 139,721.34, 192,388.44 and 105,316.04 is: 145,014.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,721.34 : 192,388.44 = 105,316.04 : x
  2. Step 2: Convert to fraction form
    139,721.34/192,388.44 = 105,316.04/x
  3. Step 3: Cross multiply
    139,721.34x = 192,388.44 × 105,316.04
  4. Step 4: Simplify right side
    139,721.34x = 20,261,588,642.58
  5. Step 5: Solve for x
    x = 20,261,588,642.58/139,721.34
  6. Step 6: Final answer
    x = 145,014.27

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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.