Home / 131,255.78-196,915.05-42,509.34

Finding the Fourth Proportional to 131,255.78, 196,915.05 and 42,509.34

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Solution

The fourth proportional to 131,255.78, 196,915.05 and 42,509.34 is: 63,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,255.78 : 196,915.05 = 42,509.34 : x
  2. Step 2: Convert to fraction form
    131,255.78/196,915.05 = 42,509.34/x
  3. Step 3: Cross multiply
    131,255.78x = 196,915.05 × 42,509.34
  4. Step 4: Simplify right side
    131,255.78x = 8,370,728,811.57
  5. Step 5: Solve for x
    x = 8,370,728,811.57/131,255.78
  6. Step 6: Final answer
    x = 63,774.18

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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.