Home / 78,101.07-117,151.98-18,936.73

Finding the Fourth Proportional to 78,101.07, 117,151.98 and 18,936.73

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Solution

The fourth proportional to 78,101.07, 117,151.98 and 18,936.73 is: 28,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,101.07 : 117,151.98 = 18,936.73 : x
  2. Step 2: Convert to fraction form
    78,101.07/117,151.98 = 18,936.73/x
  3. Step 3: Cross multiply
    78,101.07x = 117,151.98 × 18,936.73
  4. Step 4: Simplify right side
    78,101.07x = 2,218,475,489.65
  5. Step 5: Solve for x
    x = 2,218,475,489.65/78,101.07
  6. Step 6: Final answer
    x = 28,405.19

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1.5x scale

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.