Home / 190,855.20-286,282.80-120,813.60

Finding the Fourth Proportional to 190,855.20, 286,282.80 and 120,813.60

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Solution

The fourth proportional to 190,855.20, 286,282.80 and 120,813.60 is: 181,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,855.20 : 286,282.80 = 120,813.60 : x
  2. Step 2: Convert to fraction form
    190,855.20/286,282.80 = 120,813.60/x
  3. Step 3: Cross multiply
    190,855.20x = 286,282.80 × 120,813.60
  4. Step 4: Simplify right side
    190,855.20x = 34,586,855,686.08
  5. Step 5: Solve for x
    x = 34,586,855,686.08/190,855.20
  6. Step 6: Final answer
    x = 181,220.40

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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.