Home / 103,991.12-156,012.48-30,119.12

Finding the Fourth Proportional to 103,991.12, 156,012.48 and 30,119.12

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Solution

The fourth proportional to 103,991.12, 156,012.48 and 30,119.12 is: 45,186.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,991.12 : 156,012.48 = 30,119.12 : x
  2. Step 2: Convert to fraction form
    103,991.12/156,012.48 = 30,119.12/x
  3. Step 3: Cross multiply
    103,991.12x = 156,012.48 × 30,119.12
  4. Step 4: Simplify right side
    103,991.12x = 4,698,958,606.62
  5. Step 5: Solve for x
    x = 4,698,958,606.62/103,991.12
  6. Step 6: Final answer
    x = 45,186.15

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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.