Home / 118,287.54-163,235.86-64,571.78

Finding the Fourth Proportional to 118,287.54, 163,235.86 and 64,571.78

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Solution

The fourth proportional to 118,287.54, 163,235.86 and 64,571.78 is: 89,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,287.54 : 163,235.86 = 64,571.78 : x
  2. Step 2: Convert to fraction form
    118,287.54/163,235.86 = 64,571.78/x
  3. Step 3: Cross multiply
    118,287.54x = 163,235.86 × 64,571.78
  4. Step 4: Simplify right side
    118,287.54x = 10,540,430,286.69
  5. Step 5: Solve for x
    x = 10,540,430,286.69/118,287.54
  6. Step 6: Final answer
    x = 89,108.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.