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Finding the Fourth Proportional to 190,417.20, 285,496.20 and 90,625.20

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Solution

The fourth proportional to 190,417.20, 285,496.20 and 90,625.20 is: 135,876.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,417.20 : 285,496.20 = 90,625.20 : x
  2. Step 2: Convert to fraction form
    190,417.20/285,496.20 = 90,625.20/x
  3. Step 3: Cross multiply
    190,417.20x = 285,496.20 × 90,625.20
  4. Step 4: Simplify right side
    190,417.20x = 25,873,150,224.24
  5. Step 5: Solve for x
    x = 25,873,150,224.24/190,417.20
  6. Step 6: Final answer
    x = 135,876.12

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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.