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Finding the Fourth Proportional to 136,525.88, 188,406.64 and 76,100.44

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Solution

The fourth proportional to 136,525.88, 188,406.64 and 76,100.44 is: 105,019.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,525.88 : 188,406.64 = 76,100.44 : x
  2. Step 2: Convert to fraction form
    136,525.88/188,406.64 = 76,100.44/x
  3. Step 3: Cross multiply
    136,525.88x = 188,406.64 × 76,100.44
  4. Step 4: Simplify right side
    136,525.88x = 14,337,828,202.92
  5. Step 5: Solve for x
    x = 14,337,828,202.92/136,525.88
  6. Step 6: Final answer
    x = 105,019.12

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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.