Home / 103,982.90-155,999.55-30,110.90

Finding the Fourth Proportional to 103,982.90, 155,999.55 and 30,110.90

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Solution

The fourth proportional to 103,982.90, 155,999.55 and 30,110.90 is: 45,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,982.90 : 155,999.55 = 30,110.90 : x
  2. Step 2: Convert to fraction form
    103,982.90/155,999.55 = 30,110.90/x
  3. Step 3: Cross multiply
    103,982.90x = 155,999.55 × 30,110.90
  4. Step 4: Simplify right side
    103,982.90x = 4,697,286,850.10
  5. Step 5: Solve for x
    x = 4,697,286,850.10/103,982.90
  6. Step 6: Final answer
    x = 45,173.65

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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.