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Finding the Fourth Proportional to 122,655.94, 169,334.97 and 79,674.10

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Solution

The fourth proportional to 122,655.94, 169,334.97 and 79,674.10 is: 109,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,655.94 : 169,334.97 = 79,674.10 : x
  2. Step 2: Convert to fraction form
    122,655.94/169,334.97 = 79,674.10/x
  3. Step 3: Cross multiply
    122,655.94x = 169,334.97 × 79,674.10
  4. Step 4: Simplify right side
    122,655.94x = 13,491,611,333.28
  5. Step 5: Solve for x
    x = 13,491,611,333.28/122,655.94
  6. Step 6: Final answer
    x = 109,995.58

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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.