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Finding the Fourth Proportional to 165,969,889.80, 248,954,834.70 and 161,186,920.80

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Solution

The fourth proportional to 165,969,889.80, 248,954,834.70 and 161,186,920.80 is: 241,780,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,969,889.80 : 248,954,834.70 = 161,186,920.80 : x
  2. Step 2: Convert to fraction form
    165,969,889.80/248,954,834.70 = 161,186,920.80/x
  3. Step 3: Cross multiply
    165,969,889.80x = 248,954,834.70 × 161,186,920.80
  4. Step 4: Simplify right side
    165,969,889.80x = 40,128,263,223,565,992
  5. Step 5: Solve for x
    x = 40,128,263,223,565,992/165,969,889.80
  6. Step 6: Final answer
    x = 241,780,381.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.