Home / 129,934.38-194,901.57-31,438.38

Finding the Fourth Proportional to 129,934.38, 194,901.57 and 31,438.38

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Solution

The fourth proportional to 129,934.38, 194,901.57 and 31,438.38 is: 47,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,934.38 : 194,901.57 = 31,438.38 : x
  2. Step 2: Convert to fraction form
    129,934.38/194,901.57 = 31,438.38/x
  3. Step 3: Cross multiply
    129,934.38x = 194,901.57 × 31,438.38
  4. Step 4: Simplify right side
    129,934.38x = 6,127,389,620.26
  5. Step 5: Solve for x
    x = 6,127,389,620.26/129,934.38
  6. Step 6: Final answer
    x = 47,157.57

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1.5x scale

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.