Home / 100,601,999.80-150,902,999.70-69,990,998.20

Finding the Fourth Proportional to 100,601,999.80, 150,902,999.70 and 69,990,998.20

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Solution

The fourth proportional to 100,601,999.80, 150,902,999.70 and 69,990,998.20 is: 104,986,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,601,999.80 : 150,902,999.70 = 69,990,998.20 : x
  2. Step 2: Convert to fraction form
    100,601,999.80/150,902,999.70 = 69,990,998.20/x
  3. Step 3: Cross multiply
    100,601,999.80x = 150,902,999.70 × 69,990,998.20
  4. Step 4: Simplify right side
    100,601,999.80x = 10,561,851,580,377,300
  5. Step 5: Solve for x
    x = 10,561,851,580,377,300/100,601,999.80
  6. Step 6: Final answer
    x = 104,986,497.30

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1.5x scale

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.