Home / 148,780.20-205,317.54-85,120.68

Finding the Fourth Proportional to 148,780.20, 205,317.54 and 85,120.68

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Solution

The fourth proportional to 148,780.20, 205,317.54 and 85,120.68 is: 117,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,780.20 : 205,317.54 = 85,120.68 : x
  2. Step 2: Convert to fraction form
    148,780.20/205,317.54 = 85,120.68/x
  3. Step 3: Cross multiply
    148,780.20x = 205,317.54 × 85,120.68
  4. Step 4: Simplify right side
    148,780.20x = 17,476,768,620.73
  5. Step 5: Solve for x
    x = 17,476,768,620.73/148,780.20
  6. Step 6: Final answer
    x = 117,467.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.