Home / 185,803.20-278,743.68-61,128

Finding the Fourth Proportional to 185,803.20, 278,743.68 and 61,128

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Solution

The fourth proportional to 185,803.20, 278,743.68 and 61,128 is: 91,704.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,803.20 : 278,743.68 = 61,128 : x
  2. Step 2: Convert to fraction form
    185,803.20/278,743.68 = 61,128/x
  3. Step 3: Cross multiply
    185,803.20x = 278,743.68 × 61,128
  4. Step 4: Simplify right side
    185,803.20x = 17,039,043,671.04
  5. Step 5: Solve for x
    x = 17,039,043,671.04/185,803.20
  6. Step 6: Final answer
    x = 91,704.79

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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.