Home / 211,380.90-291,708.04-120,748.86

Finding the Fourth Proportional to 211,380.90, 291,708.04 and 120,748.86

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Solution

The fourth proportional to 211,380.90, 291,708.04 and 120,748.86 is: 166,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,380.90 : 291,708.04 = 120,748.86 : x
  2. Step 2: Convert to fraction form
    211,380.90/291,708.04 = 120,748.86/x
  3. Step 3: Cross multiply
    211,380.90x = 291,708.04 × 120,748.86
  4. Step 4: Simplify right side
    211,380.90x = 35,223,413,282.83
  5. Step 5: Solve for x
    x = 35,223,413,282.83/211,380.90
  6. Step 6: Final answer
    x = 166,634.80

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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.