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Finding the Fourth Proportional to 79,167.68, 118,740.54 and 19,999.70

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Solution

The fourth proportional to 79,167.68, 118,740.54 and 19,999.70 is: 29,996.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,167.68 : 118,740.54 = 19,999.70 : x
  2. Step 2: Convert to fraction form
    79,167.68/118,740.54 = 19,999.70/x
  3. Step 3: Cross multiply
    79,167.68x = 118,740.54 × 19,999.70
  4. Step 4: Simplify right side
    79,167.68x = 2,374,775,177.84
  5. Step 5: Solve for x
    x = 2,374,775,177.84/79,167.68
  6. Step 6: Final answer
    x = 29,996.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.