Home / 139,979.76-193,166.44-76,316.19

Finding the Fourth Proportional to 139,979.76, 193,166.44 and 76,316.19

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Solution

The fourth proportional to 139,979.76, 193,166.44 and 76,316.19 is: 105,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,979.76 : 193,166.44 = 76,316.19 : x
  2. Step 2: Convert to fraction form
    139,979.76/193,166.44 = 76,316.19/x
  3. Step 3: Cross multiply
    139,979.76x = 193,166.44 × 76,316.19
  4. Step 4: Simplify right side
    139,979.76x = 14,741,726,736.66
  5. Step 5: Solve for x
    x = 14,741,726,736.66/139,979.76
  6. Step 6: Final answer
    x = 105,313.27

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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.