Home / 190,859.20-286,288.80-120,817.60

Finding the Fourth Proportional to 190,859.20, 286,288.80 and 120,817.60

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Solution

The fourth proportional to 190,859.20, 286,288.80 and 120,817.60 is: 181,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,859.20 : 286,288.80 = 120,817.60 : x
  2. Step 2: Convert to fraction form
    190,859.20/286,288.80 = 120,817.60/x
  3. Step 3: Cross multiply
    190,859.20x = 286,288.80 × 120,817.60
  4. Step 4: Simplify right side
    190,859.20x = 34,588,725,722.88
  5. Step 5: Solve for x
    x = 34,588,725,722.88/190,859.20
  6. Step 6: Final answer
    x = 181,226.40

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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.