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Finding the Fourth Proportional to 123,997.31, 171,117.51 and 67,409.90

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Solution

The fourth proportional to 123,997.31, 171,117.51 and 67,409.90 is: 93,026.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,997.31 : 171,117.51 = 67,409.90 : x
  2. Step 2: Convert to fraction form
    123,997.31/171,117.51 = 67,409.90/x
  3. Step 3: Cross multiply
    123,997.31x = 171,117.51 × 67,409.90
  4. Step 4: Simplify right side
    123,997.31x = 11,535,014,237.35
  5. Step 5: Solve for x
    x = 11,535,014,237.35/123,997.31
  6. Step 6: Final answer
    x = 93,026.33

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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.