Home / 129,828.38-179,163.70-70,212.38

Finding the Fourth Proportional to 129,828.38, 179,163.70 and 70,212.38

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Solution

The fourth proportional to 129,828.38, 179,163.70 and 70,212.38 is: 96,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.38 : 179,163.70 = 70,212.38 : x
  2. Step 2: Convert to fraction form
    129,828.38/179,163.70 = 70,212.38/x
  3. Step 3: Cross multiply
    129,828.38x = 179,163.70 × 70,212.38
  4. Step 4: Simplify right side
    129,828.38x = 12,579,508,715.26
  5. Step 5: Solve for x
    x = 12,579,508,715.26/129,828.38
  6. Step 6: Final answer
    x = 96,893.37

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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.