Home / 136,958.19-189,003.23-76,531.38

Finding the Fourth Proportional to 136,958.19, 189,003.23 and 76,531.38

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Solution

The fourth proportional to 136,958.19, 189,003.23 and 76,531.38 is: 105,613.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,958.19 : 189,003.23 = 76,531.38 : x
  2. Step 2: Convert to fraction form
    136,958.19/189,003.23 = 76,531.38/x
  3. Step 3: Cross multiply
    136,958.19x = 189,003.23 × 76,531.38
  4. Step 4: Simplify right side
    136,958.19x = 14,464,677,633.70
  5. Step 5: Solve for x
    x = 14,464,677,633.70/136,958.19
  6. Step 6: Final answer
    x = 105,613.82

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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.