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Finding the Fourth Proportional to 122,000.70, 168,360.93 and 68,285.69

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Solution

The fourth proportional to 122,000.70, 168,360.93 and 68,285.69 is: 94,234.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,000.70 : 168,360.93 = 68,285.69 : x
  2. Step 2: Convert to fraction form
    122,000.70/168,360.93 = 68,285.69/x
  3. Step 3: Cross multiply
    122,000.70x = 168,360.93 × 68,285.69
  4. Step 4: Simplify right side
    122,000.70x = 11,496,642,063.64
  5. Step 5: Solve for x
    x = 11,496,642,063.64/122,000.70
  6. Step 6: Final answer
    x = 94,234.23

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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.