Home / 113,840.40-170,809.20-54,645.60

Finding the Fourth Proportional to 113,840.40, 170,809.20 and 54,645.60

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Solution

The fourth proportional to 113,840.40, 170,809.20 and 54,645.60 is: 81,991.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,840.40 : 170,809.20 = 54,645.60 : x
  2. Step 2: Convert to fraction form
    113,840.40/170,809.20 = 54,645.60/x
  3. Step 3: Cross multiply
    113,840.40x = 170,809.20 × 54,645.60
  4. Step 4: Simplify right side
    113,840.40x = 9,333,971,219.52
  5. Step 5: Solve for x
    x = 9,333,971,219.52/113,840.40
  6. Step 6: Final answer
    x = 81,991.73

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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.