Home / 121,129.20-167,157.08-67,413.36

Finding the Fourth Proportional to 121,129.20, 167,157.08 and 67,413.36

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Solution

The fourth proportional to 121,129.20, 167,157.08 and 67,413.36 is: 93,029.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,129.20 : 167,157.08 = 67,413.36 : x
  2. Step 2: Convert to fraction form
    121,129.20/167,157.08 = 67,413.36/x
  3. Step 3: Cross multiply
    121,129.20x = 167,157.08 × 67,413.36
  4. Step 4: Simplify right side
    121,129.20x = 11,268,620,410.59
  5. Step 5: Solve for x
    x = 11,268,620,410.59/121,129.20
  6. Step 6: Final answer
    x = 93,029.76

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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.