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Finding the Fourth Proportional to 120,582.66, 166,404.50 and 66,872.64

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Solution

The fourth proportional to 120,582.66, 166,404.50 and 66,872.64 is: 92,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,582.66 : 166,404.50 = 66,872.64 : x
  2. Step 2: Convert to fraction form
    120,582.66/166,404.50 = 66,872.64/x
  3. Step 3: Cross multiply
    120,582.66x = 166,404.50 × 66,872.64
  4. Step 4: Simplify right side
    120,582.66x = 11,127,908,222.88
  5. Step 5: Solve for x
    x = 11,127,908,222.88/120,582.66
  6. Step 6: Final answer
    x = 92,284.48

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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.