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Finding the Fourth Proportional to 121,607.28, 167,846.04 and 71,322.48

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Solution

The fourth proportional to 121,607.28, 167,846.04 and 71,322.48 is: 98,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,607.28 : 167,846.04 = 71,322.48 : x
  2. Step 2: Convert to fraction form
    121,607.28/167,846.04 = 71,322.48/x
  3. Step 3: Cross multiply
    121,607.28x = 167,846.04 × 71,322.48
  4. Step 4: Simplify right side
    121,607.28x = 11,971,195,830.98
  5. Step 5: Solve for x
    x = 11,971,195,830.98/121,607.28
  6. Step 6: Final answer
    x = 98,441.44

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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.