Home / 138,397,195.90-190,984,768.23-76,515,943.42

Finding the Fourth Proportional to 138,397,195.90, 190,984,768.23 and 76,515,943.42

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Solution

The fourth proportional to 138,397,195.90, 190,984,768.23 and 76,515,943.42 is: 105,590,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,397,195.90 : 190,984,768.23 = 76,515,943.42 : x
  2. Step 2: Convert to fraction form
    138,397,195.90/190,984,768.23 = 76,515,943.42/x
  3. Step 3: Cross multiply
    138,397,195.90x = 190,984,768.23 × 76,515,943.42
  4. Step 4: Simplify right side
    138,397,195.90x = 14,613,379,719,968,494
  5. Step 5: Solve for x
    x = 14,613,379,719,968,494/138,397,195.90
  6. Step 6: Final answer
    x = 105,590,143.10

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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.