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Finding the Fourth Proportional to 123,809.81, 170,861.67 and 69,364.33

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Solution

The fourth proportional to 123,809.81, 170,861.67 and 69,364.33 is: 95,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,809.81 : 170,861.67 = 69,364.33 : x
  2. Step 2: Convert to fraction form
    123,809.81/170,861.67 = 69,364.33/x
  3. Step 3: Cross multiply
    123,809.81x = 170,861.67 × 69,364.33
  4. Step 4: Simplify right side
    123,809.81x = 11,851,704,835.08
  5. Step 5: Solve for x
    x = 11,851,704,835.08/123,809.81
  6. Step 6: Final answer
    x = 95,725.09

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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.