Home / 121,005.09-166,984.74-67,289.64

Finding the Fourth Proportional to 121,005.09, 166,984.74 and 67,289.64

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Solution

The fourth proportional to 121,005.09, 166,984.74 and 67,289.64 is: 92,858.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.09 : 166,984.74 = 67,289.64 : x
  2. Step 2: Convert to fraction form
    121,005.09/166,984.74 = 67,289.64/x
  3. Step 3: Cross multiply
    121,005.09x = 166,984.74 × 67,289.64
  4. Step 4: Simplify right side
    121,005.09x = 11,236,342,413.90
  5. Step 5: Solve for x
    x = 11,236,342,413.90/121,005.09
  6. Step 6: Final answer
    x = 92,858.43

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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.