Home / 190,918.80-286,378.20-66,259.80

Finding the Fourth Proportional to 190,918.80, 286,378.20 and 66,259.80

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Solution

The fourth proportional to 190,918.80, 286,378.20 and 66,259.80 is: 99,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,918.80 : 286,378.20 = 66,259.80 : x
  2. Step 2: Convert to fraction form
    190,918.80/286,378.20 = 66,259.80/x
  3. Step 3: Cross multiply
    190,918.80x = 286,378.20 × 66,259.80
  4. Step 4: Simplify right side
    190,918.80x = 18,975,362,256.36
  5. Step 5: Solve for x
    x = 18,975,362,256.36/190,918.80
  6. Step 6: Final answer
    x = 99,389.70

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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.