Home / 153,783.20-230,739.60-83,712.80

Finding the Fourth Proportional to 153,783.20, 230,739.60 and 83,712.80

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Solution

The fourth proportional to 153,783.20, 230,739.60 and 83,712.80 is: 125,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,783.20 : 230,739.60 = 83,712.80 : x
  2. Step 2: Convert to fraction form
    153,783.20/230,739.60 = 83,712.80/x
  3. Step 3: Cross multiply
    153,783.20x = 230,739.60 × 83,712.80
  4. Step 4: Simplify right side
    153,783.20x = 19,315,857,986.88
  5. Step 5: Solve for x
    x = 19,315,857,986.88/153,783.20
  6. Step 6: Final answer
    x = 125,604.47

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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.