Home / 190,905.20-286,357.80-120,863.60

Finding the Fourth Proportional to 190,905.20, 286,357.80 and 120,863.60

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Solution

The fourth proportional to 190,905.20, 286,357.80 and 120,863.60 is: 181,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,905.20 : 286,357.80 = 120,863.60 : x
  2. Step 2: Convert to fraction form
    190,905.20/286,357.80 = 120,863.60/x
  3. Step 3: Cross multiply
    190,905.20x = 286,357.80 × 120,863.60
  4. Step 4: Simplify right side
    190,905.20x = 34,610,234,596.08
  5. Step 5: Solve for x
    x = 34,610,234,596.08/190,905.20
  6. Step 6: Final answer
    x = 181,295.40

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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.