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Finding the Fourth Proportional to 131,751.41, 197,239.53 and 81,670.73

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Solution

The fourth proportional to 131,751.41, 197,239.53 and 81,670.73 is: 122,265.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,751.41 : 197,239.53 = 81,670.73 : x
  2. Step 2: Convert to fraction form
    131,751.41/197,239.53 = 81,670.73/x
  3. Step 3: Cross multiply
    131,751.41x = 197,239.53 × 81,670.73
  4. Step 4: Simplify right side
    131,751.41x = 16,108,696,399.96
  5. Step 5: Solve for x
    x = 16,108,696,399.96/131,751.41
  6. Step 6: Final answer
    x = 122,265.84

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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.