Home / 190,193.28-285,120.72-90,291.84

Finding the Fourth Proportional to 190,193.28, 285,120.72 and 90,291.84

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Solution

The fourth proportional to 190,193.28, 285,120.72 and 90,291.84 is: 135,357.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,193.28 : 285,120.72 = 90,291.84 : x
  2. Step 2: Convert to fraction form
    190,193.28/285,120.72 = 90,291.84/x
  3. Step 3: Cross multiply
    190,193.28x = 285,120.72 × 90,291.84
  4. Step 4: Simplify right side
    190,193.28x = 25,744,074,430.92
  5. Step 5: Solve for x
    x = 25,744,074,430.92/190,193.28
  6. Step 6: Final answer
    x = 135,357.43

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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.