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Finding the Fourth Proportional to 136,252.56, 188,028.54 and 76,636.56

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Solution

The fourth proportional to 136,252.56, 188,028.54 and 76,636.56 is: 105,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,252.56 : 188,028.54 = 76,636.56 : x
  2. Step 2: Convert to fraction form
    136,252.56/188,028.54 = 76,636.56/x
  3. Step 3: Cross multiply
    136,252.56x = 188,028.54 × 76,636.56
  4. Step 4: Simplify right side
    136,252.56x = 14,409,860,487.42
  5. Step 5: Solve for x
    x = 14,409,860,487.42/136,252.56
  6. Step 6: Final answer
    x = 105,758.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.