Home / 211,381.36-291,724.66-115,906.66

Finding the Fourth Proportional to 211,381.36, 291,724.66 and 115,906.66

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Solution

The fourth proportional to 211,381.36, 291,724.66 and 115,906.66 is: 159,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,381.36 : 291,724.66 = 115,906.66 : x
  2. Step 2: Convert to fraction form
    211,381.36/291,724.66 = 115,906.66/x
  3. Step 3: Cross multiply
    211,381.36x = 291,724.66 × 115,906.66
  4. Step 4: Simplify right side
    211,381.36x = 33,812,830,980.24
  5. Step 5: Solve for x
    x = 33,812,830,980.24/211,381.36
  6. Step 6: Final answer
    x = 159,961.27

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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.