Home / 261,192.79-391,936.81-111,418.93

Finding the Fourth Proportional to 261,192.79, 391,936.81 and 111,418.93

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Solution

The fourth proportional to 261,192.79, 391,936.81 and 111,418.93 is: 167,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,192.79 : 391,936.81 = 111,418.93 : x
  2. Step 2: Convert to fraction form
    261,192.79/391,936.81 = 111,418.93/x
  3. Step 3: Cross multiply
    261,192.79x = 391,936.81 × 111,418.93
  4. Step 4: Simplify right side
    261,192.79x = 43,669,179,997.81
  5. Step 5: Solve for x
    x = 43,669,179,997.81/261,192.79
  6. Step 6: Final answer
    x = 167,191.37

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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.