Home / 139,869.09-193,092.45-109,176.37

Finding the Fourth Proportional to 139,869.09, 193,092.45 and 109,176.37

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Solution

The fourth proportional to 139,869.09, 193,092.45 and 109,176.37 is: 150,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,869.09 : 193,092.45 = 109,176.37 : x
  2. Step 2: Convert to fraction form
    139,869.09/193,092.45 = 109,176.37/x
  3. Step 3: Cross multiply
    139,869.09x = 193,092.45 × 109,176.37
  4. Step 4: Simplify right side
    139,869.09x = 21,081,132,765.41
  5. Step 5: Solve for x
    x = 21,081,132,765.41/139,869.09
  6. Step 6: Final answer
    x = 150,720.45

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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.