Home / 211,580.10-291,949.92-120,921.66

Finding the Fourth Proportional to 211,580.10, 291,949.92 and 120,921.66

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Solution

The fourth proportional to 211,580.10, 291,949.92 and 120,921.66 is: 166,854.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,580.10 : 291,949.92 = 120,921.66 : x
  2. Step 2: Convert to fraction form
    211,580.10/291,949.92 = 120,921.66/x
  3. Step 3: Cross multiply
    211,580.10x = 291,949.92 × 120,921.66
  4. Step 4: Simplify right side
    211,580.10x = 35,303,068,963.27
  5. Step 5: Solve for x
    x = 35,303,068,963.27/211,580.10
  6. Step 6: Final answer
    x = 166,854.39

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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.