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Finding the Fourth Proportional to 112,755.98, 155,534.90 and 74,515.88

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Solution

The fourth proportional to 112,755.98, 155,534.90 and 74,515.88 is: 102,786.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,755.98 : 155,534.90 = 74,515.88 : x
  2. Step 2: Convert to fraction form
    112,755.98/155,534.90 = 74,515.88/x
  3. Step 3: Cross multiply
    112,755.98x = 155,534.90 × 74,515.88
  4. Step 4: Simplify right side
    112,755.98x = 11,589,819,944.21
  5. Step 5: Solve for x
    x = 11,589,819,944.21/112,755.98
  6. Step 6: Final answer
    x = 102,786.74

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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.