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Finding the Fourth Proportional to 122,415.94, 168,935.25 and 67,969

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Solution

The fourth proportional to 122,415.94, 168,935.25 and 67,969 is: 93,797.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,415.94 : 168,935.25 = 67,969 : x
  2. Step 2: Convert to fraction form
    122,415.94/168,935.25 = 67,969/x
  3. Step 3: Cross multiply
    122,415.94x = 168,935.25 × 67,969
  4. Step 4: Simplify right side
    122,415.94x = 11,482,360,007.25
  5. Step 5: Solve for x
    x = 11,482,360,007.25/122,415.94
  6. Step 6: Final answer
    x = 93,797.92

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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.