Home / 190,864.80-286,297.20-66,218.40

Finding the Fourth Proportional to 190,864.80, 286,297.20 and 66,218.40

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Solution

The fourth proportional to 190,864.80, 286,297.20 and 66,218.40 is: 99,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,864.80 : 286,297.20 = 66,218.40 : x
  2. Step 2: Convert to fraction form
    190,864.80/286,297.20 = 66,218.40/x
  3. Step 3: Cross multiply
    190,864.80x = 286,297.20 × 66,218.40
  4. Step 4: Simplify right side
    190,864.80x = 18,958,142,508.48
  5. Step 5: Solve for x
    x = 18,958,142,508.48/190,864.80
  6. Step 6: Final answer
    x = 99,327.60

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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.