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Finding the Fourth Proportional to 123,906.30, 170,991.12 and 70,201.26

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Solution

The fourth proportional to 123,906.30, 170,991.12 and 70,201.26 is: 96,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,906.30 : 170,991.12 = 70,201.26 : x
  2. Step 2: Convert to fraction form
    123,906.30/170,991.12 = 70,201.26/x
  3. Step 3: Cross multiply
    123,906.30x = 170,991.12 × 70,201.26
  4. Step 4: Simplify right side
    123,906.30x = 12,003,792,072.81
  5. Step 5: Solve for x
    x = 12,003,792,072.81/123,906.30
  6. Step 6: Final answer
    x = 96,877.98

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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.