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Finding the Fourth Proportional to 122,882.86, 169,606.00 and 80,416.78

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Solution

The fourth proportional to 122,882.86, 169,606.00 and 80,416.78 is: 110,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,882.86 : 169,606.00 = 80,416.78 : x
  2. Step 2: Convert to fraction form
    122,882.86/169,606.00 = 80,416.78/x
  3. Step 3: Cross multiply
    122,882.86x = 169,606.00 × 80,416.78
  4. Step 4: Simplify right side
    122,882.86x = 13,639,168,611.65
  5. Step 5: Solve for x
    x = 13,639,168,611.65/122,882.86
  6. Step 6: Final answer
    x = 110,993.26

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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.