Home / 126,879.64-190,335.86-42,603.60

Finding the Fourth Proportional to 126,879.64, 190,335.86 and 42,603.60

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Solution

The fourth proportional to 126,879.64, 190,335.86 and 42,603.60 is: 63,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,879.64 : 190,335.86 = 42,603.60 : x
  2. Step 2: Convert to fraction form
    126,879.64/190,335.86 = 42,603.60/x
  3. Step 3: Cross multiply
    126,879.64x = 190,335.86 × 42,603.60
  4. Step 4: Simplify right side
    126,879.64x = 8,108,992,845.10
  5. Step 5: Solve for x
    x = 8,108,992,845.10/126,879.64
  6. Step 6: Final answer
    x = 63,910.91

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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.