Home / 261,186.18-391,409.73-111,275.52

Finding the Fourth Proportional to 261,186.18, 391,409.73 and 111,275.52

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Solution

The fourth proportional to 261,186.18, 391,409.73 and 111,275.52 is: 166,755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,186.18 : 391,409.73 = 111,275.52 : x
  2. Step 2: Convert to fraction form
    261,186.18/391,409.73 = 111,275.52/x
  3. Step 3: Cross multiply
    261,186.18x = 391,409.73 × 111,275.52
  4. Step 4: Simplify right side
    261,186.18x = 43,554,321,238.81
  5. Step 5: Solve for x
    x = 43,554,321,238.81/261,186.18
  6. Step 6: Final answer
    x = 166,755.84

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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.