Home / 121,912.04-168,246.15-68,200.67

Finding the Fourth Proportional to 121,912.04, 168,246.15 and 68,200.67

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Solution

The fourth proportional to 121,912.04, 168,246.15 and 68,200.67 is: 94,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,912.04 : 168,246.15 = 68,200.67 : x
  2. Step 2: Convert to fraction form
    121,912.04/168,246.15 = 68,200.67/x
  3. Step 3: Cross multiply
    121,912.04x = 168,246.15 × 68,200.67
  4. Step 4: Simplify right side
    121,912.04x = 11,474,500,154.92
  5. Step 5: Solve for x
    x = 11,474,500,154.92/121,912.04
  6. Step 6: Final answer
    x = 94,121.14

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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.