Home / 138,611,757-191,285,736.31-76,733,128.92

Finding the Fourth Proportional to 138,611,757, 191,285,736.31 and 76,733,128.92

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Solution

The fourth proportional to 138,611,757, 191,285,736.31 and 76,733,128.92 is: 105,892,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,757 : 191,285,736.31 = 76,733,128.92 : x
  2. Step 2: Convert to fraction form
    138,611,757/191,285,736.31 = 76,733,128.92/x
  3. Step 3: Cross multiply
    138,611,757x = 191,285,736.31 × 76,733,128.92
  4. Step 4: Simplify right side
    138,611,757x = 14,677,953,064,832,356
  5. Step 5: Solve for x
    x = 14,677,953,064,832,356/138,611,757
  6. Step 6: Final answer
    x = 105,892,554.73

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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.