Home / 129,069.26-178,141.07-82,472.34

Finding the Fourth Proportional to 129,069.26, 178,141.07 and 82,472.34

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Solution

The fourth proportional to 129,069.26, 178,141.07 and 82,472.34 is: 113,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,069.26 : 178,141.07 = 82,472.34 : x
  2. Step 2: Convert to fraction form
    129,069.26/178,141.07 = 82,472.34/x
  3. Step 3: Cross multiply
    129,069.26x = 178,141.07 × 82,472.34
  4. Step 4: Simplify right side
    129,069.26x = 14,691,710,264.15
  5. Step 5: Solve for x
    x = 14,691,710,264.15/129,069.26
  6. Step 6: Final answer
    x = 113,828.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.