Home / 129,640.50-194,460.75-31,144.50

Finding the Fourth Proportional to 129,640.50, 194,460.75 and 31,144.50

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Solution

The fourth proportional to 129,640.50, 194,460.75 and 31,144.50 is: 46,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,640.50 : 194,460.75 = 31,144.50 : x
  2. Step 2: Convert to fraction form
    129,640.50/194,460.75 = 31,144.50/x
  3. Step 3: Cross multiply
    129,640.50x = 194,460.75 × 31,144.50
  4. Step 4: Simplify right side
    129,640.50x = 6,056,382,828.38
  5. Step 5: Solve for x
    x = 6,056,382,828.38/129,640.50
  6. Step 6: Final answer
    x = 46,716.75

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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.