Home / 190,382.21-262,729.01-105,500.69

Finding the Fourth Proportional to 190,382.21, 262,729.01 and 105,500.69

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Solution

The fourth proportional to 190,382.21, 262,729.01 and 105,500.69 is: 145,591.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,382.21 : 262,729.01 = 105,500.69 : x
  2. Step 2: Convert to fraction form
    190,382.21/262,729.01 = 105,500.69/x
  3. Step 3: Cross multiply
    190,382.21x = 262,729.01 × 105,500.69
  4. Step 4: Simplify right side
    190,382.21x = 27,718,091,838.02
  5. Step 5: Solve for x
    x = 27,718,091,838.02/190,382.21
  6. Step 6: Final answer
    x = 145,591.82

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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.