Home / 158,708.19-219,009.78-87,086.64

Finding the Fourth Proportional to 158,708.19, 219,009.78 and 87,086.64

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Solution

The fourth proportional to 158,708.19, 219,009.78 and 87,086.64 is: 120,175.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,708.19 : 219,009.78 = 87,086.64 : x
  2. Step 2: Convert to fraction form
    158,708.19/219,009.78 = 87,086.64/x
  3. Step 3: Cross multiply
    158,708.19x = 219,009.78 × 87,086.64
  4. Step 4: Simplify right side
    158,708.19x = 19,072,825,867.34
  5. Step 5: Solve for x
    x = 19,072,825,867.34/158,708.19
  6. Step 6: Final answer
    x = 120,175.44

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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.