Home / 129,559.16-193,899.78-79,670.84

Finding the Fourth Proportional to 129,559.16, 193,899.78 and 79,670.84

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Solution

The fourth proportional to 129,559.16, 193,899.78 and 79,670.84 is: 119,236.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,559.16 : 193,899.78 = 79,670.84 : x
  2. Step 2: Convert to fraction form
    129,559.16/193,899.78 = 79,670.84/x
  3. Step 3: Cross multiply
    129,559.16x = 193,899.78 × 79,670.84
  4. Step 4: Simplify right side
    129,559.16x = 15,448,158,348.42
  5. Step 5: Solve for x
    x = 15,448,158,348.42/129,559.16
  6. Step 6: Final answer
    x = 119,236.33

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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.