Home / 190,003.61-262,203.03-105,121.28

Finding the Fourth Proportional to 190,003.61, 262,203.03 and 105,121.28

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Solution

The fourth proportional to 190,003.61, 262,203.03 and 105,121.28 is: 145,066.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,003.61 : 262,203.03 = 105,121.28 : x
  2. Step 2: Convert to fraction form
    190,003.61/262,203.03 = 105,121.28/x
  3. Step 3: Cross multiply
    190,003.61x = 262,203.03 × 105,121.28
  4. Step 4: Simplify right side
    190,003.61x = 27,563,118,788.99
  5. Step 5: Solve for x
    x = 27,563,118,788.99/190,003.61
  6. Step 6: Final answer
    x = 145,066.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.