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Finding the Fourth Proportional to 120,015.60, 179,634.60 and 106,018.80

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Solution

The fourth proportional to 120,015.60, 179,634.60 and 106,018.80 is: 158,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015.60 : 179,634.60 = 106,018.80 : x
  2. Step 2: Convert to fraction form
    120,015.60/179,634.60 = 106,018.80/x
  3. Step 3: Cross multiply
    120,015.60x = 179,634.60 × 106,018.80
  4. Step 4: Simplify right side
    120,015.60x = 19,044,644,730.48
  5. Step 5: Solve for x
    x = 19,044,644,730.48/120,015.60
  6. Step 6: Final answer
    x = 158,684.74

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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.