Home / 112,311,889.82-168,356,232.09-78,161,491.22

Finding the Fourth Proportional to 112,311,889.82, 168,356,232.09 and 78,161,491.22

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Solution

The fourth proportional to 112,311,889.82, 168,356,232.09 and 78,161,491.22 is: 117,164,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,311,889.82 : 168,356,232.09 = 78,161,491.22 : x
  2. Step 2: Convert to fraction form
    112,311,889.82/168,356,232.09 = 78,161,491.22/x
  3. Step 3: Cross multiply
    112,311,889.82x = 168,356,232.09 × 78,161,491.22
  4. Step 4: Simplify right side
    112,311,889.82x = 13,158,974,156,334,818
  5. Step 5: Solve for x
    x = 13,158,974,156,334,818/112,311,889.82
  6. Step 6: Final answer
    x = 117,164,568.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.