Home / 261,193.79-391,938.31-111,419.93

Finding the Fourth Proportional to 261,193.79, 391,938.31 and 111,419.93

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Solution

The fourth proportional to 261,193.79, 391,938.31 and 111,419.93 is: 167,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,193.79 : 391,938.31 = 111,419.93 : x
  2. Step 2: Convert to fraction form
    261,193.79/391,938.31 = 111,419.93/x
  3. Step 3: Cross multiply
    261,193.79x = 391,938.31 × 111,419.93
  4. Step 4: Simplify right side
    261,193.79x = 43,669,739,064.52
  5. Step 5: Solve for x
    x = 43,669,739,064.52/261,193.79
  6. Step 6: Final answer
    x = 167,192.87

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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.