Home / 120,354.12-166,016.34-88,605

Finding the Fourth Proportional to 120,354.12, 166,016.34 and 88,605

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Solution

The fourth proportional to 120,354.12, 166,016.34 and 88,605 is: 122,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,354.12 : 166,016.34 = 88,605 : x
  2. Step 2: Convert to fraction form
    120,354.12/166,016.34 = 88,605/x
  3. Step 3: Cross multiply
    120,354.12x = 166,016.34 × 88,605
  4. Step 4: Simplify right side
    120,354.12x = 14,709,877,805.70
  5. Step 5: Solve for x
    x = 14,709,877,805.70/120,354.12
  6. Step 6: Final answer
    x = 122,221.64

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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.