Home / 129,558.66-193,899-79,670.34

Finding the Fourth Proportional to 129,558.66, 193,899 and 79,670.34

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Solution

The fourth proportional to 129,558.66, 193,899 and 79,670.34 is: 119,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,558.66 : 193,899 = 79,670.34 : x
  2. Step 2: Convert to fraction form
    129,558.66/193,899 = 79,670.34/x
  3. Step 3: Cross multiply
    129,558.66x = 193,899 × 79,670.34
  4. Step 4: Simplify right side
    129,558.66x = 15,447,999,255.66
  5. Step 5: Solve for x
    x = 15,447,999,255.66/129,558.66
  6. Step 6: Final answer
    x = 119,235.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.