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Finding the Fourth Proportional to 118,785.44, 163,918.04 and 65,070.64

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Solution

The fourth proportional to 118,785.44, 163,918.04 and 65,070.64 is: 89,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,785.44 : 163,918.04 = 65,070.64 : x
  2. Step 2: Convert to fraction form
    118,785.44/163,918.04 = 65,070.64/x
  3. Step 3: Cross multiply
    118,785.44x = 163,918.04 × 65,070.64
  4. Step 4: Simplify right side
    118,785.44x = 10,666,251,770.35
  5. Step 5: Solve for x
    x = 10,666,251,770.35/118,785.44
  6. Step 6: Final answer
    x = 89,794.27

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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.