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Finding the Fourth Proportional to 100,543.37, 138,734.42 and 58,093.70

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Solution

The fourth proportional to 100,543.37, 138,734.42 and 58,093.70 is: 80,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,543.37 : 138,734.42 = 58,093.70 : x
  2. Step 2: Convert to fraction form
    100,543.37/138,734.42 = 58,093.70/x
  3. Step 3: Cross multiply
    100,543.37x = 138,734.42 × 58,093.70
  4. Step 4: Simplify right side
    100,543.37x = 8,059,594,791.01
  5. Step 5: Solve for x
    x = 8,059,594,791.01/100,543.37
  6. Step 6: Final answer
    x = 80,160.38

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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.