Home / 137,664.45-189,977.09-80,343.18

Finding the Fourth Proportional to 137,664.45, 189,977.09 and 80,343.18

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Solution

The fourth proportional to 137,664.45, 189,977.09 and 80,343.18 is: 110,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,664.45 : 189,977.09 = 80,343.18 : x
  2. Step 2: Convert to fraction form
    137,664.45/189,977.09 = 80,343.18/x
  3. Step 3: Cross multiply
    137,664.45x = 189,977.09 × 80,343.18
  4. Step 4: Simplify right side
    137,664.45x = 15,263,363,136.03
  5. Step 5: Solve for x
    x = 15,263,363,136.03/137,664.45
  6. Step 6: Final answer
    x = 110,873.67

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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.