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Finding the Fourth Proportional to 211,709.84, 292,148.66 and 125,672.46

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Solution

The fourth proportional to 211,709.84, 292,148.66 and 125,672.46 is: 173,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,709.84 : 292,148.66 = 125,672.46 : x
  2. Step 2: Convert to fraction form
    211,709.84/292,148.66 = 125,672.46/x
  3. Step 3: Cross multiply
    211,709.84x = 292,148.66 × 125,672.46
  4. Step 4: Simplify right side
    211,709.84x = 36,715,040,787.90
  5. Step 5: Solve for x
    x = 36,715,040,787.90/211,709.84
  6. Step 6: Final answer
    x = 173,421.51

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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.