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Finding the Fourth Proportional to 123,894.36, 170,970.48 and 67,305.60

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Solution

The fourth proportional to 123,894.36, 170,970.48 and 67,305.60 is: 92,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,894.36 : 170,970.48 = 67,305.60 : x
  2. Step 2: Convert to fraction form
    123,894.36/170,970.48 = 67,305.60/x
  3. Step 3: Cross multiply
    123,894.36x = 170,970.48 × 67,305.60
  4. Step 4: Simplify right side
    123,894.36x = 11,507,270,738.69
  5. Step 5: Solve for x
    x = 11,507,270,738.69/123,894.36
  6. Step 6: Final answer
    x = 92,879.70

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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.