Home / 121,144,765.92-167,178,911.76-66,140,620.80

Finding the Fourth Proportional to 121,144,765.92, 167,178,911.76 and 66,140,620.80

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Solution

The fourth proportional to 121,144,765.92, 167,178,911.76 and 66,140,620.80 is: 91,273,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,144,765.92 : 167,178,911.76 = 66,140,620.80 : x
  2. Step 2: Convert to fraction form
    121,144,765.92/167,178,911.76 = 66,140,620.80/x
  3. Step 3: Cross multiply
    121,144,765.92x = 167,178,911.76 × 66,140,620.80
  4. Step 4: Simplify right side
    121,144,765.92x = 11,057,317,008,474,820
  5. Step 5: Solve for x
    x = 11,057,317,008,474,820/121,144,765.92
  6. Step 6: Final answer
    x = 91,273,584.33

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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.