Home / 140,899.10-211,536.30-81,777.20

Finding the Fourth Proportional to 140,899.10, 211,536.30 and 81,777.20

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Solution

The fourth proportional to 140,899.10, 211,536.30 and 81,777.20 is: 122,774.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,899.10 : 211,536.30 = 81,777.20 : x
  2. Step 2: Convert to fraction form
    140,899.10/211,536.30 = 81,777.20/x
  3. Step 3: Cross multiply
    140,899.10x = 211,536.30 × 81,777.20
  4. Step 4: Simplify right side
    140,899.10x = 17,298,846,312.36
  5. Step 5: Solve for x
    x = 17,298,846,312.36/140,899.10
  6. Step 6: Final answer
    x = 122,774.71

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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.