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Finding the Fourth Proportional to 118,863.80, 164,010.54 and 76,412.60

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Solution

The fourth proportional to 118,863.80, 164,010.54 and 76,412.60 is: 105,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,863.80 : 164,010.54 = 76,412.60 : x
  2. Step 2: Convert to fraction form
    118,863.80/164,010.54 = 76,412.60/x
  3. Step 3: Cross multiply
    118,863.80x = 164,010.54 × 76,412.60
  4. Step 4: Simplify right side
    118,863.80x = 12,532,471,788.80
  5. Step 5: Solve for x
    x = 12,532,471,788.80/118,863.80
  6. Step 6: Final answer
    x = 105,435.56

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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.