Home / 126,838.20-190,127.70-74,220.60

Finding the Fourth Proportional to 126,838.20, 190,127.70 and 74,220.60

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Solution

The fourth proportional to 126,838.20, 190,127.70 and 74,220.60 is: 111,255.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,838.20 : 190,127.70 = 74,220.60 : x
  2. Step 2: Convert to fraction form
    126,838.20/190,127.70 = 74,220.60/x
  3. Step 3: Cross multiply
    126,838.20x = 190,127.70 × 74,220.60
  4. Step 4: Simplify right side
    126,838.20x = 14,111,391,970.62
  5. Step 5: Solve for x
    x = 14,111,391,970.62/126,838.20
  6. Step 6: Final answer
    x = 111,255.06

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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.