Home / 190,171.15-262,453.79-105,288.21

Finding the Fourth Proportional to 190,171.15, 262,453.79 and 105,288.21

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Solution

The fourth proportional to 190,171.15, 262,453.79 and 105,288.21 is: 145,307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,171.15 : 262,453.79 = 105,288.21 : x
  2. Step 2: Convert to fraction form
    190,171.15/262,453.79 = 105,288.21/x
  3. Step 3: Cross multiply
    190,171.15x = 262,453.79 × 105,288.21
  4. Step 4: Simplify right side
    190,171.15x = 27,633,289,756.82
  5. Step 5: Solve for x
    x = 27,633,289,756.82/190,171.15
  6. Step 6: Final answer
    x = 145,307.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.