Home / 118,512.32-163,564.80-68,201.60

Finding the Fourth Proportional to 118,512.32, 163,564.80 and 68,201.60

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Solution

The fourth proportional to 118,512.32, 163,564.80 and 68,201.60 is: 94,128.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,512.32 : 163,564.80 = 68,201.60 : x
  2. Step 2: Convert to fraction form
    118,512.32/163,564.80 = 68,201.60/x
  3. Step 3: Cross multiply
    118,512.32x = 163,564.80 × 68,201.60
  4. Step 4: Simplify right side
    118,512.32x = 11,155,381,063.68
  5. Step 5: Solve for x
    x = 11,155,381,063.68/118,512.32
  6. Step 6: Final answer
    x = 94,128.45

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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.