Home / 147,195.12-203,128.68-82,655.39

Finding the Fourth Proportional to 147,195.12, 203,128.68 and 82,655.39

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Solution

The fourth proportional to 147,195.12, 203,128.68 and 82,655.39 is: 114,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,195.12 : 203,128.68 = 82,655.39 : x
  2. Step 2: Convert to fraction form
    147,195.12/203,128.68 = 82,655.39/x
  3. Step 3: Cross multiply
    147,195.12x = 203,128.68 × 82,655.39
  4. Step 4: Simplify right side
    147,195.12x = 16,789,679,249.94
  5. Step 5: Solve for x
    x = 16,789,679,249.94/147,195.12
  6. Step 6: Final answer
    x = 114,064.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.