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Finding the Fourth Proportional to 120,745.60, 181,118.40 and 41,867.80

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Solution

The fourth proportional to 120,745.60, 181,118.40 and 41,867.80 is: 62,801.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,745.60 : 181,118.40 = 41,867.80 : x
  2. Step 2: Convert to fraction form
    120,745.60/181,118.40 = 41,867.80/x
  3. Step 3: Cross multiply
    120,745.60x = 181,118.40 × 41,867.80
  4. Step 4: Simplify right side
    120,745.60x = 7,583,028,947.52
  5. Step 5: Solve for x
    x = 7,583,028,947.52/120,745.60
  6. Step 6: Final answer
    x = 62,801.70

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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.