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Finding the Fourth Proportional to 123,275.89, 170,119.07 and 68,828.89

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Solution

The fourth proportional to 123,275.89, 170,119.07 and 68,828.89 is: 94,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,275.89 : 170,119.07 = 68,828.89 : x
  2. Step 2: Convert to fraction form
    123,275.89/170,119.07 = 68,828.89/x
  3. Step 3: Cross multiply
    123,275.89x = 170,119.07 × 68,828.89
  4. Step 4: Simplify right side
    123,275.89x = 11,709,107,571.63
  5. Step 5: Solve for x
    x = 11,709,107,571.63/123,275.89
  6. Step 6: Final answer
    x = 94,982.95

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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.