Home / 129,686.78-194,475.09-50,788.46

Finding the Fourth Proportional to 129,686.78, 194,475.09 and 50,788.46

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Solution

The fourth proportional to 129,686.78, 194,475.09 and 50,788.46 is: 76,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.78 : 194,475.09 = 50,788.46 : x
  2. Step 2: Convert to fraction form
    129,686.78/194,475.09 = 50,788.46/x
  3. Step 3: Cross multiply
    129,686.78x = 194,475.09 × 50,788.46
  4. Step 4: Simplify right side
    129,686.78x = 9,877,090,329.46
  5. Step 5: Solve for x
    x = 9,877,090,329.46/129,686.78
  6. Step 6: Final answer
    x = 76,161.12

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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.