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Finding the Fourth Proportional to 118,779.24, 163,910.80 and 65,064.64

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Solution

The fourth proportional to 118,779.24, 163,910.80 and 65,064.64 is: 89,786.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,779.24 : 163,910.80 = 65,064.64 : x
  2. Step 2: Convert to fraction form
    118,779.24/163,910.80 = 65,064.64/x
  3. Step 3: Cross multiply
    118,779.24x = 163,910.80 × 65,064.64
  4. Step 4: Simplify right side
    118,779.24x = 10,664,797,194.11
  5. Step 5: Solve for x
    x = 10,664,797,194.11/118,779.24
  6. Step 6: Final answer
    x = 89,786.71

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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.