Home / 138,611,758.50-191,285,738.38-76,733,130.42

Finding the Fourth Proportional to 138,611,758.50, 191,285,738.38 and 76,733,130.42

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Solution

The fourth proportional to 138,611,758.50, 191,285,738.38 and 76,733,130.42 is: 105,892,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,758.50 : 191,285,738.38 = 76,733,130.42 : x
  2. Step 2: Convert to fraction form
    138,611,758.50/191,285,738.38 = 76,733,130.42/x
  3. Step 3: Cross multiply
    138,611,758.50x = 191,285,738.38 × 76,733,130.42
  4. Step 4: Simplify right side
    138,611,758.50x = 14,677,953,510,598,540
  5. Step 5: Solve for x
    x = 14,677,953,510,598,540/138,611,758.50
  6. Step 6: Final answer
    x = 105,892,556.80

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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.