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Finding the Fourth Proportional to 122,391.95, 168,902.25 and 67,947.80

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Solution

The fourth proportional to 122,391.95, 168,902.25 and 67,947.80 is: 93,768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,391.95 : 168,902.25 = 67,947.80 : x
  2. Step 2: Convert to fraction form
    122,391.95/168,902.25 = 67,947.80/x
  3. Step 3: Cross multiply
    122,391.95x = 168,902.25 × 67,947.80
  4. Step 4: Simplify right side
    122,391.95x = 11,476,536,302.55
  5. Step 5: Solve for x
    x = 11,476,536,302.55/122,391.95
  6. Step 6: Final answer
    x = 93,768.72

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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.