Home / 192,669.23-289,055.79-80,312.11

Finding the Fourth Proportional to 192,669.23, 289,055.79 and 80,312.11

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Solution

The fourth proportional to 192,669.23, 289,055.79 and 80,312.11 is: 120,489.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,669.23 : 289,055.79 = 80,312.11 : x
  2. Step 2: Convert to fraction form
    192,669.23/289,055.79 = 80,312.11/x
  3. Step 3: Cross multiply
    192,669.23x = 289,055.79 × 80,312.11
  4. Step 4: Simplify right side
    192,669.23x = 23,214,679,679.98
  5. Step 5: Solve for x
    x = 23,214,679,679.98/192,669.23
  6. Step 6: Final answer
    x = 120,489.81

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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.