Home / 211,084.79-291,291.32-120,439.10

Finding the Fourth Proportional to 211,084.79, 291,291.32 and 120,439.10

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Solution

The fourth proportional to 211,084.79, 291,291.32 and 120,439.10 is: 166,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,084.79 : 291,291.32 = 120,439.10 : x
  2. Step 2: Convert to fraction form
    211,084.79/291,291.32 = 120,439.10/x
  3. Step 3: Cross multiply
    211,084.79x = 291,291.32 × 120,439.10
  4. Step 4: Simplify right side
    211,084.79x = 35,082,865,447.94
  5. Step 5: Solve for x
    x = 35,082,865,447.94/211,084.79
  6. Step 6: Final answer
    x = 166,202.72

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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.