Home / 138,397,194.90-190,984,766.85-76,515,942.42

Finding the Fourth Proportional to 138,397,194.90, 190,984,766.85 and 76,515,942.42

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Solution

The fourth proportional to 138,397,194.90, 190,984,766.85 and 76,515,942.42 is: 105,590,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,397,194.90 : 190,984,766.85 = 76,515,942.42 : x
  2. Step 2: Convert to fraction form
    138,397,194.90/190,984,766.85 = 76,515,942.42/x
  3. Step 3: Cross multiply
    138,397,194.90x = 190,984,766.85 × 76,515,942.42
  4. Step 4: Simplify right side
    138,397,194.90x = 14,613,379,423,391,724
  5. Step 5: Solve for x
    x = 14,613,379,423,391,724/138,397,194.90
  6. Step 6: Final answer
    x = 105,590,141.72

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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.