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Finding the Fourth Proportional to 199,279.96, 275,104.53 and 138,072.57

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Solution

The fourth proportional to 199,279.96, 275,104.53 and 138,072.57 is: 190,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,279.96 : 275,104.53 = 138,072.57 : x
  2. Step 2: Convert to fraction form
    199,279.96/275,104.53 = 138,072.57/x
  3. Step 3: Cross multiply
    199,279.96x = 275,104.53 × 138,072.57
  4. Step 4: Simplify right side
    199,279.96x = 37,984,389,475.74
  5. Step 5: Solve for x
    x = 37,984,389,475.74/199,279.96
  6. Step 6: Final answer
    x = 190,608.17

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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.