Home / 138,611,759.88-191,285,740.28-76,733,131.80

Finding the Fourth Proportional to 138,611,759.88, 191,285,740.28 and 76,733,131.80

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Solution

The fourth proportional to 138,611,759.88, 191,285,740.28 and 76,733,131.80 is: 105,892,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,759.88 : 191,285,740.28 = 76,733,131.80 : x
  2. Step 2: Convert to fraction form
    138,611,759.88/191,285,740.28 = 76,733,131.80/x
  3. Step 3: Cross multiply
    138,611,759.88x = 191,285,740.28 × 76,733,131.80
  4. Step 4: Simplify right side
    138,611,759.88x = 14,677,953,920,365,808
  5. Step 5: Solve for x
    x = 14,677,953,920,365,808/138,611,759.88
  6. Step 6: Final answer
    x = 105,892,558.71

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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.