Home / 140,782.40-211,173.60-131,451.20

Finding the Fourth Proportional to 140,782.40, 211,173.60 and 131,451.20

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Solution

The fourth proportional to 140,782.40, 211,173.60 and 131,451.20 is: 197,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,782.40 : 211,173.60 = 131,451.20 : x
  2. Step 2: Convert to fraction form
    140,782.40/211,173.60 = 131,451.20/x
  3. Step 3: Cross multiply
    140,782.40x = 211,173.60 × 131,451.20
  4. Step 4: Simplify right side
    140,782.40x = 27,759,023,128.32
  5. Step 5: Solve for x
    x = 27,759,023,128.32/140,782.40
  6. Step 6: Final answer
    x = 197,176.80

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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.