Home / 121,231.69-167,376.32-89,345.05

Finding the Fourth Proportional to 121,231.69, 167,376.32 and 89,345.05

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Solution

The fourth proportional to 121,231.69, 167,376.32 and 89,345.05 is: 123,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,231.69 : 167,376.32 = 89,345.05 : x
  2. Step 2: Convert to fraction form
    121,231.69/167,376.32 = 89,345.05/x
  3. Step 3: Cross multiply
    121,231.69x = 167,376.32 × 89,345.05
  4. Step 4: Simplify right side
    121,231.69x = 14,954,245,679.22
  5. Step 5: Solve for x
    x = 14,954,245,679.22/121,231.69
  6. Step 6: Final answer
    x = 123,352.61

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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.