Home / 138,611,758.87-191,285,738.90-76,733,130.79

Finding the Fourth Proportional to 138,611,758.87, 191,285,738.90 and 76,733,130.79

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Solution

The fourth proportional to 138,611,758.87, 191,285,738.90 and 76,733,130.79 is: 105,892,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,758.87 : 191,285,738.90 = 76,733,130.79 : x
  2. Step 2: Convert to fraction form
    138,611,758.87/191,285,738.90 = 76,733,130.79/x
  3. Step 3: Cross multiply
    138,611,758.87x = 191,285,738.90 × 76,733,130.79
  4. Step 4: Simplify right side
    138,611,758.87x = 14,677,953,621,275,492
  5. Step 5: Solve for x
    x = 14,677,953,621,275,492/138,611,758.87
  6. Step 6: Final answer
    x = 105,892,557.32

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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.