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Finding the Fourth Proportional to 120,213.60, 179,974.80 and 73,557.60

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Solution

The fourth proportional to 120,213.60, 179,974.80 and 73,557.60 is: 110,124.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,213.60 : 179,974.80 = 73,557.60 : x
  2. Step 2: Convert to fraction form
    120,213.60/179,974.80 = 73,557.60/x
  3. Step 3: Cross multiply
    120,213.60x = 179,974.80 × 73,557.60
  4. Step 4: Simplify right side
    120,213.60x = 13,238,514,348.48
  5. Step 5: Solve for x
    x = 13,238,514,348.48/120,213.60
  6. Step 6: Final answer
    x = 110,124.93

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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.