Home / 129,971.88-194,929.80-75,900.48

Finding the Fourth Proportional to 129,971.88, 194,929.80 and 75,900.48

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Solution

The fourth proportional to 129,971.88, 194,929.80 and 75,900.48 is: 113,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,971.88 : 194,929.80 = 75,900.48 : x
  2. Step 2: Convert to fraction form
    129,971.88/194,929.80 = 75,900.48/x
  3. Step 3: Cross multiply
    129,971.88x = 194,929.80 × 75,900.48
  4. Step 4: Simplify right side
    129,971.88x = 14,795,265,386.30
  5. Step 5: Solve for x
    x = 14,795,265,386.30/129,971.88
  6. Step 6: Final answer
    x = 113,834.36

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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.