Home / 129,938.96-179,318.70-76,262.69

Finding the Fourth Proportional to 129,938.96, 179,318.70 and 76,262.69

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Solution

The fourth proportional to 129,938.96, 179,318.70 and 76,262.69 is: 105,244.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.96 : 179,318.70 = 76,262.69 : x
  2. Step 2: Convert to fraction form
    129,938.96/179,318.70 = 76,262.69/x
  3. Step 3: Cross multiply
    129,938.96x = 179,318.70 × 76,262.69
  4. Step 4: Simplify right side
    129,938.96x = 13,675,326,429.30
  5. Step 5: Solve for x
    x = 13,675,326,429.30/129,938.96
  6. Step 6: Final answer
    x = 105,244.23

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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.