Home / 117,717-162,413.55-66,721.56

Finding the Fourth Proportional to 117,717, 162,413.55 and 66,721.56

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Solution

The fourth proportional to 117,717, 162,413.55 and 66,721.56 is: 92,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,717 : 162,413.55 = 66,721.56 : x
  2. Step 2: Convert to fraction form
    117,717/162,413.55 = 66,721.56/x
  3. Step 3: Cross multiply
    117,717x = 162,413.55 × 66,721.56
  4. Step 4: Simplify right side
    117,717x = 10,836,485,421.14
  5. Step 5: Solve for x
    x = 10,836,485,421.14/117,717
  6. Step 6: Final answer
    x = 92,055.40

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1.5x scale

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.