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Finding the Fourth Proportional to 121,313.32, 167,218.50 and 80,947.24

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Solution

The fourth proportional to 121,313.32, 167,218.50 and 80,947.24 is: 111,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,313.32 : 167,218.50 = 80,947.24 : x
  2. Step 2: Convert to fraction form
    121,313.32/167,218.50 = 80,947.24/x
  3. Step 3: Cross multiply
    121,313.32x = 167,218.50 × 80,947.24
  4. Step 4: Simplify right side
    121,313.32x = 13,535,876,051.94
  5. Step 5: Solve for x
    x = 13,535,876,051.94/121,313.32
  6. Step 6: Final answer
    x = 111,577.82

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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.