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Finding the Fourth Proportional to 180,309.35, 248,805.11 and 99,725.87

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Solution

The fourth proportional to 180,309.35, 248,805.11 and 99,725.87 is: 137,609.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,309.35 : 248,805.11 = 99,725.87 : x
  2. Step 2: Convert to fraction form
    180,309.35/248,805.11 = 99,725.87/x
  3. Step 3: Cross multiply
    180,309.35x = 248,805.11 × 99,725.87
  4. Step 4: Simplify right side
    180,309.35x = 24,812,305,556.57
  5. Step 5: Solve for x
    x = 24,812,305,556.57/180,309.35
  6. Step 6: Final answer
    x = 137,609.64

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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.