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Finding the Fourth Proportional to 139,217.69, 192,087.13 and 84,769.22

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Solution

The fourth proportional to 139,217.69, 192,087.13 and 84,769.22 is: 116,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,217.69 : 192,087.13 = 84,769.22 : x
  2. Step 2: Convert to fraction form
    139,217.69/192,087.13 = 84,769.22/x
  3. Step 3: Cross multiply
    139,217.69x = 192,087.13 × 84,769.22
  4. Step 4: Simplify right side
    139,217.69x = 16,283,076,182.14
  5. Step 5: Solve for x
    x = 16,283,076,182.14/139,217.69
  6. Step 6: Final answer
    x = 116,961.26

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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.