Home / 190,631.12-285,729.20-89,323.21

Finding the Fourth Proportional to 190,631.12, 285,729.20 and 89,323.21

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Solution

The fourth proportional to 190,631.12, 285,729.20 and 89,323.21 is: 133,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,631.12 : 285,729.20 = 89,323.21 : x
  2. Step 2: Convert to fraction form
    190,631.12/285,729.20 = 89,323.21/x
  3. Step 3: Cross multiply
    190,631.12x = 285,729.20 × 89,323.21
  4. Step 4: Simplify right side
    190,631.12x = 25,522,247,721.79
  5. Step 5: Solve for x
    x = 25,522,247,721.79/190,631.12
  6. Step 6: Final answer
    x = 133,882.90

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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.