Home / 117,176.12-161,725.76-76,888.54

Finding the Fourth Proportional to 117,176.12, 161,725.76 and 76,888.54

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Solution

The fourth proportional to 117,176.12, 161,725.76 and 76,888.54 is: 106,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,176.12 : 161,725.76 = 76,888.54 : x
  2. Step 2: Convert to fraction form
    117,176.12/161,725.76 = 76,888.54/x
  3. Step 3: Cross multiply
    117,176.12x = 161,725.76 × 76,888.54
  4. Step 4: Simplify right side
    117,176.12x = 12,434,858,105.34
  5. Step 5: Solve for x
    x = 12,434,858,105.34/117,176.12
  6. Step 6: Final answer
    x = 106,121.10

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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.