Home / 211,042.84-291,266.96-120,378.04

Finding the Fourth Proportional to 211,042.84, 291,266.96 and 120,378.04

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Solution

The fourth proportional to 211,042.84, 291,266.96 and 120,378.04 is: 166,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,042.84 : 291,266.96 = 120,378.04 : x
  2. Step 2: Convert to fraction form
    211,042.84/291,266.96 = 120,378.04/x
  3. Step 3: Cross multiply
    211,042.84x = 291,266.96 × 120,378.04
  4. Step 4: Simplify right side
    211,042.84x = 35,062,145,761.56
  5. Step 5: Solve for x
    x = 35,062,145,761.56/211,042.84
  6. Step 6: Final answer
    x = 166,137.58

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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.