Home / 137,769.86-190,099.77-81,173.54

Finding the Fourth Proportional to 137,769.86, 190,099.77 and 81,173.54

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Solution

The fourth proportional to 137,769.86, 190,099.77 and 81,173.54 is: 112,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,769.86 : 190,099.77 = 81,173.54 : x
  2. Step 2: Convert to fraction form
    137,769.86/190,099.77 = 81,173.54/x
  3. Step 3: Cross multiply
    137,769.86x = 190,099.77 × 81,173.54
  4. Step 4: Simplify right side
    137,769.86x = 15,431,071,284.09
  5. Step 5: Solve for x
    x = 15,431,071,284.09/137,769.86
  6. Step 6: Final answer
    x = 112,006.15

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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.