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Finding the Fourth Proportional to 118,928.67, 164,207.67 and 76,561.02

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Solution

The fourth proportional to 118,928.67, 164,207.67 and 76,561.02 is: 105,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,928.67 : 164,207.67 = 76,561.02 : x
  2. Step 2: Convert to fraction form
    118,928.67/164,207.67 = 76,561.02/x
  3. Step 3: Cross multiply
    118,928.67x = 164,207.67 × 76,561.02
  4. Step 4: Simplify right side
    118,928.67x = 12,571,906,707.02
  5. Step 5: Solve for x
    x = 12,571,906,707.02/118,928.67
  6. Step 6: Final answer
    x = 105,709.64

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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.