Home / 190,391.21-285,493.50-78,040.86

Finding the Fourth Proportional to 190,391.21, 285,493.50 and 78,040.86

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Solution

The fourth proportional to 190,391.21, 285,493.50 and 78,040.86 is: 117,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,391.21 : 285,493.50 = 78,040.86 : x
  2. Step 2: Convert to fraction form
    190,391.21/285,493.50 = 78,040.86/x
  3. Step 3: Cross multiply
    190,391.21x = 285,493.50 × 78,040.86
  4. Step 4: Simplify right side
    190,391.21x = 22,280,158,264.41
  5. Step 5: Solve for x
    x = 22,280,158,264.41/190,391.21
  6. Step 6: Final answer
    x = 117,023.04

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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.