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Finding the Fourth Proportional to 83,690.44, 126,111.37 and 69,224.92

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Solution

The fourth proportional to 83,690.44, 126,111.37 and 69,224.92 is: 104,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,690.44 : 126,111.37 = 69,224.92 : x
  2. Step 2: Convert to fraction form
    83,690.44/126,111.37 = 69,224.92/x
  3. Step 3: Cross multiply
    83,690.44x = 126,111.37 × 69,224.92
  4. Step 4: Simplify right side
    83,690.44x = 8,730,049,499.34
  5. Step 5: Solve for x
    x = 8,730,049,499.34/83,690.44
  6. Step 6: Final answer
    x = 104,313.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.