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Finding the Fourth Proportional to 120,671.12, 166,535.27 and 66,966.29

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Solution

The fourth proportional to 120,671.12, 166,535.27 and 66,966.29 is: 92,418.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,671.12 : 166,535.27 = 66,966.29 : x
  2. Step 2: Convert to fraction form
    120,671.12/166,535.27 = 66,966.29/x
  3. Step 3: Cross multiply
    120,671.12x = 166,535.27 × 66,966.29
  4. Step 4: Simplify right side
    120,671.12x = 11,152,249,186.05
  5. Step 5: Solve for x
    x = 11,152,249,186.05/120,671.12
  6. Step 6: Final answer
    x = 92,418.54

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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.