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Finding the Fourth Proportional to 131,486.70, 197,405.03 and 69,200.94

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Solution

The fourth proportional to 131,486.70, 197,405.03 and 69,200.94 is: 103,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,486.70 : 197,405.03 = 69,200.94 : x
  2. Step 2: Convert to fraction form
    131,486.70/197,405.03 = 69,200.94/x
  3. Step 3: Cross multiply
    131,486.70x = 197,405.03 × 69,200.94
  4. Step 4: Simplify right side
    131,486.70x = 13,660,613,636.73
  5. Step 5: Solve for x
    x = 13,660,613,636.73/131,486.70
  6. Step 6: Final answer
    x = 103,893.50

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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.