Home / 147,729.20-221,334.60-121,290.80

Finding the Fourth Proportional to 147,729.20, 221,334.60 and 121,290.80

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Solution

The fourth proportional to 147,729.20, 221,334.60 and 121,290.80 is: 181,723.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,729.20 : 221,334.60 = 121,290.80 : x
  2. Step 2: Convert to fraction form
    147,729.20/221,334.60 = 121,290.80/x
  3. Step 3: Cross multiply
    147,729.20x = 221,334.60 × 121,290.80
  4. Step 4: Simplify right side
    147,729.20x = 26,845,850,701.68
  5. Step 5: Solve for x
    x = 26,845,850,701.68/147,729.20
  6. Step 6: Final answer
    x = 181,723.39

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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.