Home / 129,972.88-194,931.30-75,901.48

Finding the Fourth Proportional to 129,972.88, 194,931.30 and 75,901.48

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Solution

The fourth proportional to 129,972.88, 194,931.30 and 75,901.48 is: 113,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.88 : 194,931.30 = 75,901.48 : x
  2. Step 2: Convert to fraction form
    129,972.88/194,931.30 = 75,901.48/x
  3. Step 3: Cross multiply
    129,972.88x = 194,931.30 × 75,901.48
  4. Step 4: Simplify right side
    129,972.88x = 14,795,574,168.32
  5. Step 5: Solve for x
    x = 14,795,574,168.32/129,972.88
  6. Step 6: Final answer
    x = 113,835.86

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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.