Home / 136,218.12-187,977.42-75,788.88

Finding the Fourth Proportional to 136,218.12, 187,977.42 and 75,788.88

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Solution

The fourth proportional to 136,218.12, 187,977.42 and 75,788.88 is: 104,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,218.12 : 187,977.42 = 75,788.88 : x
  2. Step 2: Convert to fraction form
    136,218.12/187,977.42 = 75,788.88/x
  3. Step 3: Cross multiply
    136,218.12x = 187,977.42 × 75,788.88
  4. Step 4: Simplify right side
    136,218.12x = 14,246,598,127.09
  5. Step 5: Solve for x
    x = 14,246,598,127.09/136,218.12
  6. Step 6: Final answer
    x = 104,586.66

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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.