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Finding the Fourth Proportional to 122,300.80, 168,703.50 and 76,906.96

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Solution

The fourth proportional to 122,300.80, 168,703.50 and 76,906.96 is: 106,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,300.80 : 168,703.50 = 76,906.96 : x
  2. Step 2: Convert to fraction form
    122,300.80/168,703.50 = 76,906.96/x
  3. Step 3: Cross multiply
    122,300.80x = 168,703.50 × 76,906.96
  4. Step 4: Simplify right side
    122,300.80x = 12,974,473,326.36
  5. Step 5: Solve for x
    x = 12,974,473,326.36/122,300.80
  6. Step 6: Final answer
    x = 106,086.58

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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.