Home / 117,177.12-161,727.14-76,889.54

Finding the Fourth Proportional to 117,177.12, 161,727.14 and 76,889.54

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Solution

The fourth proportional to 117,177.12, 161,727.14 and 76,889.54 is: 106,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,177.12 : 161,727.14 = 76,889.54 : x
  2. Step 2: Convert to fraction form
    117,177.12/161,727.14 = 76,889.54/x
  3. Step 3: Cross multiply
    117,177.12x = 161,727.14 × 76,889.54
  4. Step 4: Simplify right side
    117,177.12x = 12,435,125,400.12
  5. Step 5: Solve for x
    x = 12,435,125,400.12/117,177.12
  6. Step 6: Final answer
    x = 106,122.47

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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.