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Finding the Fourth Proportional to 113,611.74, 170,418.69 and 30,505.74

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Solution

The fourth proportional to 113,611.74, 170,418.69 and 30,505.74 is: 45,758.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,611.74 : 170,418.69 = 30,505.74 : x
  2. Step 2: Convert to fraction form
    113,611.74/170,418.69 = 30,505.74/x
  3. Step 3: Cross multiply
    113,611.74x = 170,418.69 × 30,505.74
  4. Step 4: Simplify right side
    113,611.74x = 5,198,748,248.28
  5. Step 5: Solve for x
    x = 5,198,748,248.28/113,611.74
  6. Step 6: Final answer
    x = 45,758.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.