Home / 138,701,990.32-191,411,839.53-79,162,092.18

Finding the Fourth Proportional to 138,701,990.32, 191,411,839.53 and 79,162,092.18

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Solution

The fourth proportional to 138,701,990.32, 191,411,839.53 and 79,162,092.18 is: 109,245,452.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,701,990.32 : 191,411,839.53 = 79,162,092.18 : x
  2. Step 2: Convert to fraction form
    138,701,990.32/191,411,839.53 = 79,162,092.18/x
  3. Step 3: Cross multiply
    138,701,990.32x = 191,411,839.53 × 79,162,092.18
  4. Step 4: Simplify right side
    138,701,990.32x = 15,152,561,685,217,230
  5. Step 5: Solve for x
    x = 15,152,561,685,217,230/138,701,990.32
  6. Step 6: Final answer
    x = 109,245,452.43

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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.