Home / 207,974.70-287,040.38-117,356.36

Finding the Fourth Proportional to 207,974.70, 287,040.38 and 117,356.36

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Solution

The fourth proportional to 207,974.70, 287,040.38 and 117,356.36 is: 161,971.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,974.70 : 287,040.38 = 117,356.36 : x
  2. Step 2: Convert to fraction form
    207,974.70/287,040.38 = 117,356.36/x
  3. Step 3: Cross multiply
    207,974.70x = 287,040.38 × 117,356.36
  4. Step 4: Simplify right side
    207,974.70x = 33,686,012,147.83
  5. Step 5: Solve for x
    x = 33,686,012,147.83/207,974.70
  6. Step 6: Final answer
    x = 161,971.68

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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.