Home / 103,620.35-155,660.93-100,855.55

Finding the Fourth Proportional to 103,620.35, 155,660.93 and 100,855.55

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Solution

The fourth proportional to 103,620.35, 155,660.93 and 100,855.55 is: 151,507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.35 : 155,660.93 = 100,855.55 : x
  2. Step 2: Convert to fraction form
    103,620.35/155,660.93 = 100,855.55/x
  3. Step 3: Cross multiply
    103,620.35x = 155,660.93 × 100,855.55
  4. Step 4: Simplify right side
    103,620.35x = 15,699,268,708.66
  5. Step 5: Solve for x
    x = 15,699,268,708.66/103,620.35
  6. Step 6: Final answer
    x = 151,507.58

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1.5x scale

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.