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Finding the Fourth Proportional to 121,370.72, 167,422.97 and 75,969.88

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Solution

The fourth proportional to 121,370.72, 167,422.97 and 75,969.88 is: 104,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,370.72 : 167,422.97 = 75,969.88 : x
  2. Step 2: Convert to fraction form
    121,370.72/167,422.97 = 75,969.88/x
  3. Step 3: Cross multiply
    121,370.72x = 167,422.97 × 75,969.88
  4. Step 4: Simplify right side
    121,370.72x = 12,719,102,711.51
  5. Step 5: Solve for x
    x = 12,719,102,711.51/121,370.72
  6. Step 6: Final answer
    x = 104,795.48

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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.