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Finding the Fourth Proportional to 124,142.94, 171,309.81 and 69,691.08

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Solution

The fourth proportional to 124,142.94, 171,309.81 and 69,691.08 is: 96,169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,142.94 : 171,309.81 = 69,691.08 : x
  2. Step 2: Convert to fraction form
    124,142.94/171,309.81 = 69,691.08/x
  3. Step 3: Cross multiply
    124,142.94x = 171,309.81 × 69,691.08
  4. Step 4: Simplify right side
    124,142.94x = 11,938,765,673.49
  5. Step 5: Solve for x
    x = 11,938,765,673.49/124,142.94
  6. Step 6: Final answer
    x = 96,169.51

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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.