Home / 126,765.30-190,015.11-42,504.78

Finding the Fourth Proportional to 126,765.30, 190,015.11 and 42,504.78

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Solution

The fourth proportional to 126,765.30, 190,015.11 and 42,504.78 is: 63,712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,765.30 : 190,015.11 = 42,504.78 : x
  2. Step 2: Convert to fraction form
    126,765.30/190,015.11 = 42,504.78/x
  3. Step 3: Cross multiply
    126,765.30x = 190,015.11 × 42,504.78
  4. Step 4: Simplify right side
    126,765.30x = 8,076,550,447.23
  5. Step 5: Solve for x
    x = 8,076,550,447.23/126,765.30
  6. Step 6: Final answer
    x = 63,712.63

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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.