Home / 211,071.86-291,221.43-135,664.10

Finding the Fourth Proportional to 211,071.86, 291,221.43 and 135,664.10

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Solution

The fourth proportional to 211,071.86, 291,221.43 and 135,664.10 is: 187,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,071.86 : 291,221.43 = 135,664.10 : x
  2. Step 2: Convert to fraction form
    211,071.86/291,221.43 = 135,664.10/x
  3. Step 3: Cross multiply
    211,071.86x = 291,221.43 × 135,664.10
  4. Step 4: Simplify right side
    211,071.86x = 39,508,293,201.66
  5. Step 5: Solve for x
    x = 39,508,293,201.66/211,071.86
  6. Step 6: Final answer
    x = 187,179.35

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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.