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Finding the Fourth Proportional to 139,588.80, 192,666.76 and 79,194.80

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Solution

The fourth proportional to 139,588.80, 192,666.76 and 79,194.80 is: 109,308.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,588.80 : 192,666.76 = 79,194.80 : x
  2. Step 2: Convert to fraction form
    139,588.80/192,666.76 = 79,194.80/x
  3. Step 3: Cross multiply
    139,588.80x = 192,666.76 × 79,194.80
  4. Step 4: Simplify right side
    139,588.80x = 15,258,205,170.25
  5. Step 5: Solve for x
    x = 15,258,205,170.25/139,588.80
  6. Step 6: Final answer
    x = 109,308.23

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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.