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Finding the Fourth Proportional to 118,633.56, 163,714.30 and 64,918.58

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Solution

The fourth proportional to 118,633.56, 163,714.30 and 64,918.58 is: 89,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,633.56 : 163,714.30 = 64,918.58 : x
  2. Step 2: Convert to fraction form
    118,633.56/163,714.30 = 64,918.58/x
  3. Step 3: Cross multiply
    118,633.56x = 163,714.30 × 64,918.58
  4. Step 4: Simplify right side
    118,633.56x = 10,628,100,128.68
  5. Step 5: Solve for x
    x = 10,628,100,128.68/118,633.56
  6. Step 6: Final answer
    x = 89,587.64

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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.