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Finding the Fourth Proportional to 123,876.88, 170,952.33 and 70,173.05

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Solution

The fourth proportional to 123,876.88, 170,952.33 and 70,173.05 is: 96,840.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,876.88 : 170,952.33 = 70,173.05 : x
  2. Step 2: Convert to fraction form
    123,876.88/170,952.33 = 70,173.05/x
  3. Step 3: Cross multiply
    123,876.88x = 170,952.33 × 70,173.05
  4. Step 4: Simplify right side
    123,876.88x = 11,996,245,809.09
  5. Step 5: Solve for x
    x = 11,996,245,809.09/123,876.88
  6. Step 6: Final answer
    x = 96,840.07

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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.