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Finding the Fourth Proportional to 121,305.42, 167,402.60 and 66,859.52

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Solution

The fourth proportional to 121,305.42, 167,402.60 and 66,859.52 is: 92,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,305.42 : 167,402.60 = 66,859.52 : x
  2. Step 2: Convert to fraction form
    121,305.42/167,402.60 = 66,859.52/x
  3. Step 3: Cross multiply
    121,305.42x = 167,402.60 × 66,859.52
  4. Step 4: Simplify right side
    121,305.42x = 11,192,457,482.75
  5. Step 5: Solve for x
    x = 11,192,457,482.75/121,305.42
  6. Step 6: Final answer
    x = 92,266.76

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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.