Home / 123,927.92-171,091.68-81,609.68

Finding the Fourth Proportional to 123,927.92, 171,091.68 and 81,609.68

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Solution

The fourth proportional to 123,927.92, 171,091.68 and 81,609.68 is: 112,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,927.92 : 171,091.68 = 81,609.68 : x
  2. Step 2: Convert to fraction form
    123,927.92/171,091.68 = 81,609.68/x
  3. Step 3: Cross multiply
    123,927.92x = 171,091.68 × 81,609.68
  4. Step 4: Simplify right side
    123,927.92x = 13,962,737,255.46
  5. Step 5: Solve for x
    x = 13,962,737,255.46/123,927.92
  6. Step 6: Final answer
    x = 112,668.21

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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.