Home / 103,839.80-155,751.60-40,647.65

Finding the Fourth Proportional to 103,839.80, 155,751.60 and 40,647.65

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Solution

The fourth proportional to 103,839.80, 155,751.60 and 40,647.65 is: 60,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,839.80 : 155,751.60 = 40,647.65 : x
  2. Step 2: Convert to fraction form
    103,839.80/155,751.60 = 40,647.65/x
  3. Step 3: Cross multiply
    103,839.80x = 155,751.60 × 40,647.65
  4. Step 4: Simplify right side
    103,839.80x = 6,330,936,523.74
  5. Step 5: Solve for x
    x = 6,330,936,523.74/103,839.80
  6. Step 6: Final answer
    x = 60,968.30

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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.