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Finding the Fourth Proportional to 123,679.31, 170,677.49 and 69,963.19

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Solution

The fourth proportional to 123,679.31, 170,677.49 and 69,963.19 is: 96,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,679.31 : 170,677.49 = 69,963.19 : x
  2. Step 2: Convert to fraction form
    123,679.31/170,677.49 = 69,963.19/x
  3. Step 3: Cross multiply
    123,679.31x = 170,677.49 × 69,963.19
  4. Step 4: Simplify right side
    123,679.31x = 11,941,140,885.08
  5. Step 5: Solve for x
    x = 11,941,140,885.08/123,679.31
  6. Step 6: Final answer
    x = 96,549.22

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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.