Home / 140,504.40-210,319.20-81,163.80

Finding the Fourth Proportional to 140,504.40, 210,319.20 and 81,163.80

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Solution

The fourth proportional to 140,504.40, 210,319.20 and 81,163.80 is: 121,493.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,504.40 : 210,319.20 = 81,163.80 : x
  2. Step 2: Convert to fraction form
    140,504.40/210,319.20 = 81,163.80/x
  3. Step 3: Cross multiply
    140,504.40x = 210,319.20 × 81,163.80
  4. Step 4: Simplify right side
    140,504.40x = 17,070,305,484.96
  5. Step 5: Solve for x
    x = 17,070,305,484.96/140,504.40
  6. Step 6: Final answer
    x = 121,493.03

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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.