Home / 138,397,195.40-190,984,767.54-76,515,942.92

Finding the Fourth Proportional to 138,397,195.40, 190,984,767.54 and 76,515,942.92

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Solution

The fourth proportional to 138,397,195.40, 190,984,767.54 and 76,515,942.92 is: 105,590,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,397,195.40 : 190,984,767.54 = 76,515,942.92 : x
  2. Step 2: Convert to fraction form
    138,397,195.40/190,984,767.54 = 76,515,942.92/x
  3. Step 3: Cross multiply
    138,397,195.40x = 190,984,767.54 × 76,515,942.92
  4. Step 4: Simplify right side
    138,397,195.40x = 14,613,379,571,680,108
  5. Step 5: Solve for x
    x = 14,613,379,571,680,108/138,397,195.40
  6. Step 6: Final answer
    x = 105,590,142.41

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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.