Home / 190,371.84-262,815-121,530.54

Finding the Fourth Proportional to 190,371.84, 262,815 and 121,530.54

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Solution

The fourth proportional to 190,371.84, 262,815 and 121,530.54 is: 167,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,371.84 : 262,815 = 121,530.54 : x
  2. Step 2: Convert to fraction form
    190,371.84/262,815 = 121,530.54/x
  3. Step 3: Cross multiply
    190,371.84x = 262,815 × 121,530.54
  4. Step 4: Simplify right side
    190,371.84x = 31,940,048,870.10
  5. Step 5: Solve for x
    x = 31,940,048,870.10/190,371.84
  6. Step 6: Final answer
    x = 167,777.17

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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.