Home / 190,138.28-285,038.22-90,236.84

Finding the Fourth Proportional to 190,138.28, 285,038.22 and 90,236.84

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Solution

The fourth proportional to 190,138.28, 285,038.22 and 90,236.84 is: 135,274.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,138.28 : 285,038.22 = 90,236.84 : x
  2. Step 2: Convert to fraction form
    190,138.28/285,038.22 = 90,236.84/x
  3. Step 3: Cross multiply
    190,138.28x = 285,038.22 × 90,236.84
  4. Step 4: Simplify right side
    190,138.28x = 25,720,948,252.02
  5. Step 5: Solve for x
    x = 25,720,948,252.02/190,138.28
  6. Step 6: Final answer
    x = 135,274.96

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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.