Home / 117,143.54-161,537.26-100,203.88

Finding the Fourth Proportional to 117,143.54, 161,537.26 and 100,203.88

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Solution

The fourth proportional to 117,143.54, 161,537.26 and 100,203.88 is: 138,178.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,143.54 : 161,537.26 = 100,203.88 : x
  2. Step 2: Convert to fraction form
    117,143.54/161,537.26 = 100,203.88/x
  3. Step 3: Cross multiply
    117,143.54x = 161,537.26 × 100,203.88
  4. Step 4: Simplify right side
    117,143.54x = 16,186,660,216.57
  5. Step 5: Solve for x
    x = 16,186,660,216.57/117,143.54
  6. Step 6: Final answer
    x = 138,178.00

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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.