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Finding the Fourth Proportional to 122,248.94, 168,758.76 and 76,993.42

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Solution

The fourth proportional to 122,248.94, 168,758.76 and 76,993.42 is: 106,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,248.94 : 168,758.76 = 76,993.42 : x
  2. Step 2: Convert to fraction form
    122,248.94/168,758.76 = 76,993.42/x
  3. Step 3: Cross multiply
    122,248.94x = 168,758.76 × 76,993.42
  4. Step 4: Simplify right side
    122,248.94x = 12,993,314,087.36
  5. Step 5: Solve for x
    x = 12,993,314,087.36/122,248.94
  6. Step 6: Final answer
    x = 106,285.70

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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.