Home / 190,257.39-285,388.89-90,427.77

Finding the Fourth Proportional to 190,257.39, 285,388.89 and 90,427.77

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Solution

The fourth proportional to 190,257.39, 285,388.89 and 90,427.77 is: 135,642.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,257.39 : 285,388.89 = 90,427.77 : x
  2. Step 2: Convert to fraction form
    190,257.39/285,388.89 = 90,427.77/x
  3. Step 3: Cross multiply
    190,257.39x = 285,388.89 × 90,427.77
  4. Step 4: Simplify right side
    190,257.39x = 25,807,080,905.48
  5. Step 5: Solve for x
    x = 25,807,080,905.48/190,257.39
  6. Step 6: Final answer
    x = 135,642.99

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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.