Home / 136,002.36-187,629.48-78,631.14

Finding the Fourth Proportional to 136,002.36, 187,629.48 and 78,631.14

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Solution

The fourth proportional to 136,002.36, 187,629.48 and 78,631.14 is: 108,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,002.36 : 187,629.48 = 78,631.14 : x
  2. Step 2: Convert to fraction form
    136,002.36/187,629.48 = 78,631.14/x
  3. Step 3: Cross multiply
    136,002.36x = 187,629.48 × 78,631.14
  4. Step 4: Simplify right side
    136,002.36x = 14,753,519,910.01
  5. Step 5: Solve for x
    x = 14,753,519,910.01/136,002.36
  6. Step 6: Final answer
    x = 108,479.88

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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.