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Finding the Fourth Proportional to 121,161, 167,200.38 and 67,445.92

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Solution

The fourth proportional to 121,161, 167,200.38 and 67,445.92 is: 93,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,161 : 167,200.38 = 67,445.92 : x
  2. Step 2: Convert to fraction form
    121,161/167,200.38 = 67,445.92/x
  3. Step 3: Cross multiply
    121,161x = 167,200.38 × 67,445.92
  4. Step 4: Simplify right side
    121,161x = 11,276,983,453.45
  5. Step 5: Solve for x
    x = 11,276,983,453.45/121,161
  6. Step 6: Final answer
    x = 93,074.37

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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.