Home / 143,065,154.10-214,628,239.80-81,683,718.60

Finding the Fourth Proportional to 143,065,154.10, 214,628,239.80 and 81,683,718.60

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Solution

The fourth proportional to 143,065,154.10, 214,628,239.80 and 81,683,718.60 is: 122,542,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,065,154.10 : 214,628,239.80 = 81,683,718.60 : x
  2. Step 2: Convert to fraction form
    143,065,154.10/214,628,239.80 = 81,683,718.60/x
  3. Step 3: Cross multiply
    143,065,154.10x = 214,628,239.80 × 81,683,718.60
  4. Step 4: Simplify right side
    143,065,154.10x = 17,531,632,743,436,520
  5. Step 5: Solve for x
    x = 17,531,632,743,436,520/143,065,154.10
  6. Step 6: Final answer
    x = 122,542,996.96

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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.