Home / 131,391.54-197,115.03-42,638.14

Finding the Fourth Proportional to 131,391.54, 197,115.03 and 42,638.14

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Solution

The fourth proportional to 131,391.54, 197,115.03 and 42,638.14 is: 63,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391.54 : 197,115.03 = 42,638.14 : x
  2. Step 2: Convert to fraction form
    131,391.54/197,115.03 = 42,638.14/x
  3. Step 3: Cross multiply
    131,391.54x = 197,115.03 × 42,638.14
  4. Step 4: Simplify right side
    131,391.54x = 8,404,618,245.24
  5. Step 5: Solve for x
    x = 8,404,618,245.24/131,391.54
  6. Step 6: Final answer
    x = 63,966.21

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1.5x scale

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.