Home / 211,787.88-292,293.60-121,131.27

Finding the Fourth Proportional to 211,787.88, 292,293.60 and 121,131.27

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Solution

The fourth proportional to 211,787.88, 292,293.60 and 121,131.27 is: 167,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,787.88 : 292,293.60 = 121,131.27 : x
  2. Step 2: Convert to fraction form
    211,787.88/292,293.60 = 121,131.27/x
  3. Step 3: Cross multiply
    211,787.88x = 292,293.60 × 121,131.27
  4. Step 4: Simplify right side
    211,787.88x = 35,405,894,980.87
  5. Step 5: Solve for x
    x = 35,405,894,980.87/211,787.88
  6. Step 6: Final answer
    x = 167,176.21

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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.