Home / 190,320.36-262,644.30-105,438.84

Finding the Fourth Proportional to 190,320.36, 262,644.30 and 105,438.84

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Solution

The fourth proportional to 190,320.36, 262,644.30 and 105,438.84 is: 145,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,320.36 : 262,644.30 = 105,438.84 : x
  2. Step 2: Convert to fraction form
    190,320.36/262,644.30 = 105,438.84/x
  3. Step 3: Cross multiply
    190,320.36x = 262,644.30 × 105,438.84
  4. Step 4: Simplify right side
    190,320.36x = 27,692,910,324.61
  5. Step 5: Solve for x
    x = 27,692,910,324.61/190,320.36
  6. Step 6: Final answer
    x = 145,506.82

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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.