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Finding the Fourth Proportional to 131,677.62, 197,128.62 and 81,596.76

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Solution

The fourth proportional to 131,677.62, 197,128.62 and 81,596.76 is: 122,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,677.62 : 197,128.62 = 81,596.76 : x
  2. Step 2: Convert to fraction form
    131,677.62/197,128.62 = 81,596.76/x
  3. Step 3: Cross multiply
    131,677.62x = 197,128.62 × 81,596.76
  4. Step 4: Simplify right side
    131,677.62x = 16,085,056,695.27
  5. Step 5: Solve for x
    x = 16,085,056,695.27/131,677.62
  6. Step 6: Final answer
    x = 122,154.83

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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.