Home / 131,479.75-197,121.21-42,680.26

Finding the Fourth Proportional to 131,479.75, 197,121.21 and 42,680.26

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Solution

The fourth proportional to 131,479.75, 197,121.21 and 42,680.26 is: 63,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,479.75 : 197,121.21 = 42,680.26 : x
  2. Step 2: Convert to fraction form
    131,479.75/197,121.21 = 42,680.26/x
  3. Step 3: Cross multiply
    131,479.75x = 197,121.21 × 42,680.26
  4. Step 4: Simplify right side
    131,479.75x = 8,413,184,494.31
  5. Step 5: Solve for x
    x = 8,413,184,494.31/131,479.75
  6. Step 6: Final answer
    x = 63,988.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.