Home / 211,179.81-291,355.29-120,470.34

Finding the Fourth Proportional to 211,179.81, 291,355.29 and 120,470.34

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Solution

The fourth proportional to 211,179.81, 291,355.29 and 120,470.34 is: 166,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,179.81 : 291,355.29 = 120,470.34 : x
  2. Step 2: Convert to fraction form
    211,179.81/291,355.29 = 120,470.34/x
  3. Step 3: Cross multiply
    211,179.81x = 291,355.29 × 120,470.34
  4. Step 4: Simplify right side
    211,179.81x = 35,099,670,847.10
  5. Step 5: Solve for x
    x = 35,099,670,847.10/211,179.81
  6. Step 6: Final answer
    x = 166,207.51

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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.