Home / 121,734.32-167,990.19-68,019.74

Finding the Fourth Proportional to 121,734.32, 167,990.19 and 68,019.74

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Solution

The fourth proportional to 121,734.32, 167,990.19 and 68,019.74 is: 93,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,734.32 : 167,990.19 = 68,019.74 : x
  2. Step 2: Convert to fraction form
    121,734.32/167,990.19 = 68,019.74/x
  3. Step 3: Cross multiply
    121,734.32x = 167,990.19 × 68,019.74
  4. Step 4: Simplify right side
    121,734.32x = 11,426,648,206.40
  5. Step 5: Solve for x
    x = 11,426,648,206.40/121,734.32
  6. Step 6: Final answer
    x = 93,865.47

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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.