Home / 121,413.72-167,546.64-76,116.12

Finding the Fourth Proportional to 121,413.72, 167,546.64 and 76,116.12

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Solution

The fourth proportional to 121,413.72, 167,546.64 and 76,116.12 is: 105,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,413.72 : 167,546.64 = 76,116.12 : x
  2. Step 2: Convert to fraction form
    121,413.72/167,546.64 = 76,116.12/x
  3. Step 3: Cross multiply
    121,413.72x = 167,546.64 × 76,116.12
  4. Step 4: Simplify right side
    121,413.72x = 12,753,000,155.84
  5. Step 5: Solve for x
    x = 12,753,000,155.84/121,413.72
  6. Step 6: Final answer
    x = 105,037.55

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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.