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Finding the Fourth Proportional to 122,390.95, 168,900.87 and 67,946.80

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Solution

The fourth proportional to 122,390.95, 168,900.87 and 67,946.80 is: 93,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,390.95 : 168,900.87 = 67,946.80 : x
  2. Step 2: Convert to fraction form
    122,390.95/168,900.87 = 67,946.80/x
  3. Step 3: Cross multiply
    122,390.95x = 168,900.87 × 67,946.80
  4. Step 4: Simplify right side
    122,390.95x = 11,476,273,633.72
  5. Step 5: Solve for x
    x = 11,476,273,633.72/122,390.95
  6. Step 6: Final answer
    x = 93,767.34

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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.