Home / 185,986.40-278,710.35-128,224.37

Finding the Fourth Proportional to 185,986.40, 278,710.35 and 128,224.37

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Solution

The fourth proportional to 185,986.40, 278,710.35 and 128,224.37 is: 192,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,986.40 : 278,710.35 = 128,224.37 : x
  2. Step 2: Convert to fraction form
    185,986.40/278,710.35 = 128,224.37/x
  3. Step 3: Cross multiply
    185,986.40x = 278,710.35 × 128,224.37
  4. Step 4: Simplify right side
    185,986.40x = 35,737,457,647.68
  5. Step 5: Solve for x
    x = 35,737,457,647.68/185,986.40
  6. Step 6: Final answer
    x = 192,150.92

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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.