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Finding the Fourth Proportional to 121,174.54, 167,112 and 75,856.65

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Solution

The fourth proportional to 121,174.54, 167,112 and 75,856.65 is: 104,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,174.54 : 167,112 = 75,856.65 : x
  2. Step 2: Convert to fraction form
    121,174.54/167,112 = 75,856.65/x
  3. Step 3: Cross multiply
    121,174.54x = 167,112 × 75,856.65
  4. Step 4: Simplify right side
    121,174.54x = 12,676,556,494.80
  5. Step 5: Solve for x
    x = 12,676,556,494.80/121,174.54
  6. Step 6: Final answer
    x = 104,614.03

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1.5x scale

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.