Home / 137,533.06-189,857.79-86,620.61

Finding the Fourth Proportional to 137,533.06, 189,857.79 and 86,620.61

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Solution

The fourth proportional to 137,533.06, 189,857.79 and 86,620.61 is: 119,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,533.06 : 189,857.79 = 86,620.61 : x
  2. Step 2: Convert to fraction form
    137,533.06/189,857.79 = 86,620.61/x
  3. Step 3: Cross multiply
    137,533.06x = 189,857.79 × 86,620.61
  4. Step 4: Simplify right side
    137,533.06x = 16,445,597,583.05
  5. Step 5: Solve for x
    x = 16,445,597,583.05/137,533.06
  6. Step 6: Final answer
    x = 119,575.60

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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.