Home / 140,520.60-210,611.07-81,234.27

Finding the Fourth Proportional to 140,520.60, 210,611.07 and 81,234.27

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Solution

The fourth proportional to 140,520.60, 210,611.07 and 81,234.27 is: 121,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,520.60 : 210,611.07 = 81,234.27 : x
  2. Step 2: Convert to fraction form
    140,520.60/210,611.07 = 81,234.27/x
  3. Step 3: Cross multiply
    140,520.60x = 210,611.07 × 81,234.27
  4. Step 4: Simplify right side
    140,520.60x = 17,108,836,525.37
  5. Step 5: Solve for x
    x = 17,108,836,525.37/140,520.60
  6. Step 6: Final answer
    x = 121,753.23

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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.