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Finding the Fourth Proportional to 123,918.67, 171,007.16 and 70,203.56

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Solution

The fourth proportional to 123,918.67, 171,007.16 and 70,203.56 is: 96,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,918.67 : 171,007.16 = 70,203.56 : x
  2. Step 2: Convert to fraction form
    123,918.67/171,007.16 = 70,203.56/x
  3. Step 3: Cross multiply
    123,918.67x = 171,007.16 × 70,203.56
  4. Step 4: Simplify right side
    123,918.67x = 12,005,310,606.33
  5. Step 5: Solve for x
    x = 12,005,310,606.33/123,918.67
  6. Step 6: Final answer
    x = 96,880.57

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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.