Home / 190,860.71-286,247.31-85,709.75

Finding the Fourth Proportional to 190,860.71, 286,247.31 and 85,709.75

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Solution

The fourth proportional to 190,860.71, 286,247.31 and 85,709.75 is: 128,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,860.71 : 286,247.31 = 85,709.75 : x
  2. Step 2: Convert to fraction form
    190,860.71/286,247.31 = 85,709.75/x
  3. Step 3: Cross multiply
    190,860.71x = 286,247.31 × 85,709.75
  4. Step 4: Simplify right side
    190,860.71x = 24,534,185,378.27
  5. Step 5: Solve for x
    x = 24,534,185,378.27/190,860.71
  6. Step 6: Final answer
    x = 128,544.98

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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.