Home / 121,121.45-167,146.30-67,405.56

Finding the Fourth Proportional to 121,121.45, 167,146.30 and 67,405.56

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Solution

The fourth proportional to 121,121.45, 167,146.30 and 67,405.56 is: 93,018.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,121.45 : 167,146.30 = 67,405.56 : x
  2. Step 2: Convert to fraction form
    121,121.45/167,146.30 = 67,405.56/x
  3. Step 3: Cross multiply
    121,121.45x = 167,146.30 × 67,405.56
  4. Step 4: Simplify right side
    121,121.45x = 11,266,589,953.43
  5. Step 5: Solve for x
    x = 11,266,589,953.43/121,121.45
  6. Step 6: Final answer
    x = 93,018.95

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1.5x scale

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.