Home / 113,511.40-171,117.19-105,899.56

Finding the Fourth Proportional to 113,511.40, 171,117.19 and 105,899.56

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Solution

The fourth proportional to 113,511.40, 171,117.19 and 105,899.56 is: 159,642.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,511.40 : 171,117.19 = 105,899.56 : x
  2. Step 2: Convert to fraction form
    113,511.40/171,117.19 = 105,899.56/x
  3. Step 3: Cross multiply
    113,511.40x = 171,117.19 × 105,899.56
  4. Step 4: Simplify right side
    113,511.40x = 18,121,235,129.44
  5. Step 5: Solve for x
    x = 18,121,235,129.44/113,511.40
  6. Step 6: Final answer
    x = 159,642.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.