Home / 158,719.51-219,039.24-87,102.09

Finding the Fourth Proportional to 158,719.51, 219,039.24 and 87,102.09

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Solution

The fourth proportional to 158,719.51, 219,039.24 and 87,102.09 is: 120,204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,719.51 : 219,039.24 = 87,102.09 : x
  2. Step 2: Convert to fraction form
    158,719.51/219,039.24 = 87,102.09/x
  3. Step 3: Cross multiply
    158,719.51x = 219,039.24 × 87,102.09
  4. Step 4: Simplify right side
    158,719.51x = 19,078,776,034.73
  5. Step 5: Solve for x
    x = 19,078,776,034.73/158,719.51
  6. Step 6: Final answer
    x = 120,204.36

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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.