Home / 158,828.32-219,186.60-87,208.61

Finding the Fourth Proportional to 158,828.32, 219,186.60 and 87,208.61

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Solution

The fourth proportional to 158,828.32, 219,186.60 and 87,208.61 is: 120,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,828.32 : 219,186.60 = 87,208.61 : x
  2. Step 2: Convert to fraction form
    158,828.32/219,186.60 = 87,208.61/x
  3. Step 3: Cross multiply
    158,828.32x = 219,186.60 × 87,208.61
  4. Step 4: Simplify right side
    158,828.32x = 19,114,958,716.63
  5. Step 5: Solve for x
    x = 19,114,958,716.63/158,828.32
  6. Step 6: Final answer
    x = 120,349.81

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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.