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Finding the Fourth Proportional to 122,228.85, 168,672.80 and 67,780.73

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Solution

The fourth proportional to 122,228.85, 168,672.80 and 67,780.73 is: 93,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,228.85 : 168,672.80 = 67,780.73 : x
  2. Step 2: Convert to fraction form
    122,228.85/168,672.80 = 67,780.73/x
  3. Step 3: Cross multiply
    122,228.85x = 168,672.80 × 67,780.73
  4. Step 4: Simplify right side
    122,228.85x = 11,432,764,332.88
  5. Step 5: Solve for x
    x = 11,432,764,332.88/122,228.85
  6. Step 6: Final answer
    x = 93,535.73

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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.