Home / 138,136,139.87-190,609,781.99-82,388,103.03

Finding the Fourth Proportional to 138,136,139.87, 190,609,781.99 and 82,388,103.03

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Solution

The fourth proportional to 138,136,139.87, 190,609,781.99 and 82,388,103.03 is: 113,684,792.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,136,139.87 : 190,609,781.99 = 82,388,103.03 : x
  2. Step 2: Convert to fraction form
    138,136,139.87/190,609,781.99 = 82,388,103.03/x
  3. Step 3: Cross multiply
    138,136,139.87x = 190,609,781.99 × 82,388,103.03
  4. Step 4: Simplify right side
    138,136,139.87x = 15,703,978,356,706,020
  5. Step 5: Solve for x
    x = 15,703,978,356,706,020/138,136,139.87
  6. Step 6: Final answer
    x = 113,684,792.21

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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.