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Finding the Fourth Proportional to 123,679.49, 170,677.76 and 69,963.37

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Solution

The fourth proportional to 123,679.49, 170,677.76 and 69,963.37 is: 96,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,679.49 : 170,677.76 = 69,963.37 : x
  2. Step 2: Convert to fraction form
    123,679.49/170,677.76 = 69,963.37/x
  3. Step 3: Cross multiply
    123,679.49x = 170,677.76 × 69,963.37
  4. Step 4: Simplify right side
    123,679.49x = 11,941,190,497.14
  5. Step 5: Solve for x
    x = 11,941,190,497.14/123,679.49
  6. Step 6: Final answer
    x = 96,549.48

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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.