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Finding the Fourth Proportional to 118,888.92, 164,039.76 and 80,653.68

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Solution

The fourth proportional to 118,888.92, 164,039.76 and 80,653.68 is: 111,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,888.92 : 164,039.76 = 80,653.68 : x
  2. Step 2: Convert to fraction form
    118,888.92/164,039.76 = 80,653.68/x
  3. Step 3: Cross multiply
    118,888.92x = 164,039.76 × 80,653.68
  4. Step 4: Simplify right side
    118,888.92x = 13,230,410,310.32
  5. Step 5: Solve for x
    x = 13,230,410,310.32/118,888.92
  6. Step 6: Final answer
    x = 111,283.80

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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.