Home / 190,446.42-285,423.60-90,637.21

Finding the Fourth Proportional to 190,446.42, 285,423.60 and 90,637.21

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Solution

The fourth proportional to 190,446.42, 285,423.60 and 90,637.21 is: 135,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,446.42 : 285,423.60 = 90,637.21 : x
  2. Step 2: Convert to fraction form
    190,446.42/285,423.60 = 90,637.21/x
  3. Step 3: Cross multiply
    190,446.42x = 285,423.60 × 90,637.21
  4. Step 4: Simplify right side
    190,446.42x = 25,869,998,958.99
  5. Step 5: Solve for x
    x = 25,869,998,958.99/190,446.42
  6. Step 6: Final answer
    x = 135,838.72

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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.