Home / 120,530.05-166,349.88-76,941.43

Finding the Fourth Proportional to 120,530.05, 166,349.88 and 76,941.43

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Solution

The fourth proportional to 120,530.05, 166,349.88 and 76,941.43 is: 106,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.05 : 166,349.88 = 76,941.43 : x
  2. Step 2: Convert to fraction form
    120,530.05/166,349.88 = 76,941.43/x
  3. Step 3: Cross multiply
    120,530.05x = 166,349.88 × 76,941.43
  4. Step 4: Simplify right side
    120,530.05x = 12,799,197,231.65
  5. Step 5: Solve for x
    x = 12,799,197,231.65/120,530.05
  6. Step 6: Final answer
    x = 106,190.92

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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.