Home / 190,002.78-285,003.99-90,108.51

Finding the Fourth Proportional to 190,002.78, 285,003.99 and 90,108.51

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Solution

The fourth proportional to 190,002.78, 285,003.99 and 90,108.51 is: 135,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,002.78 : 285,003.99 = 90,108.51 : x
  2. Step 2: Convert to fraction form
    190,002.78/285,003.99 = 90,108.51/x
  3. Step 3: Cross multiply
    190,002.78x = 285,003.99 × 90,108.51
  4. Step 4: Simplify right side
    190,002.78x = 25,681,284,882.95
  5. Step 5: Solve for x
    x = 25,681,284,882.95/190,002.78
  6. Step 6: Final answer
    x = 135,162.68

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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.