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Finding the Fourth Proportional to 122,400.76, 168,899.34 and 68,674.60

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Solution

The fourth proportional to 122,400.76, 168,899.34 and 68,674.60 is: 94,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,400.76 : 168,899.34 = 68,674.60 : x
  2. Step 2: Convert to fraction form
    122,400.76/168,899.34 = 68,674.60/x
  3. Step 3: Cross multiply
    122,400.76x = 168,899.34 × 68,674.60
  4. Step 4: Simplify right side
    122,400.76x = 11,599,094,614.76
  5. Step 5: Solve for x
    x = 11,599,094,614.76/122,400.76
  6. Step 6: Final answer
    x = 94,763.26

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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.