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Finding the Fourth Proportional to 190,720.80, 286,210.80 and 106,480.80

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Solution

The fourth proportional to 190,720.80, 286,210.80 and 106,480.80 is: 159,793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,720.80 : 286,210.80 = 106,480.80 : x
  2. Step 2: Convert to fraction form
    190,720.80/286,210.80 = 106,480.80/x
  3. Step 3: Cross multiply
    190,720.80x = 286,210.80 × 106,480.80
  4. Step 4: Simplify right side
    190,720.80x = 30,475,954,952.64
  5. Step 5: Solve for x
    x = 30,475,954,952.64/190,720.80
  6. Step 6: Final answer
    x = 159,793.56

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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.