Home / 136,098.37-187,839-87,686.68

Finding the Fourth Proportional to 136,098.37, 187,839 and 87,686.68

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Solution

The fourth proportional to 136,098.37, 187,839 and 87,686.68 is: 121,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,098.37 : 187,839 = 87,686.68 : x
  2. Step 2: Convert to fraction form
    136,098.37/187,839 = 87,686.68/x
  3. Step 3: Cross multiply
    136,098.37x = 187,839 × 87,686.68
  4. Step 4: Simplify right side
    136,098.37x = 16,470,978,284.52
  5. Step 5: Solve for x
    x = 16,470,978,284.52/136,098.37
  6. Step 6: Final answer
    x = 121,022.60

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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.