Home / 138,611,763.87-191,285,745.81-76,733,135.79

Finding the Fourth Proportional to 138,611,763.87, 191,285,745.81 and 76,733,135.79

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Solution

The fourth proportional to 138,611,763.87, 191,285,745.81 and 76,733,135.79 is: 105,892,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,763.87 : 191,285,745.81 = 76,733,135.79 : x
  2. Step 2: Convert to fraction form
    138,611,763.87/191,285,745.81 = 76,733,135.79/x
  3. Step 3: Cross multiply
    138,611,763.87x = 191,285,745.81 × 76,733,135.79
  4. Step 4: Simplify right side
    138,611,763.87x = 14,677,955,107,930,154
  5. Step 5: Solve for x
    x = 14,677,955,107,930,154/138,611,763.87
  6. Step 6: Final answer
    x = 105,892,564.22

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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.