Home / 126,880.40-190,090.20-103,379.60

Finding the Fourth Proportional to 126,880.40, 190,090.20 and 103,379.60

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Solution

The fourth proportional to 126,880.40, 190,090.20 and 103,379.60 is: 154,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,880.40 : 190,090.20 = 103,379.60 : x
  2. Step 2: Convert to fraction form
    126,880.40/190,090.20 = 103,379.60/x
  3. Step 3: Cross multiply
    126,880.40x = 190,090.20 × 103,379.60
  4. Step 4: Simplify right side
    126,880.40x = 19,651,448,839.92
  5. Step 5: Solve for x
    x = 19,651,448,839.92/126,880.40
  6. Step 6: Final answer
    x = 154,881.67

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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.