Home / 129,940.40-179,347.44-76,227.68

Finding the Fourth Proportional to 129,940.40, 179,347.44 and 76,227.68

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Solution

The fourth proportional to 129,940.40, 179,347.44 and 76,227.68 is: 105,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,940.40 : 179,347.44 = 76,227.68 : x
  2. Step 2: Convert to fraction form
    129,940.40/179,347.44 = 76,227.68/x
  3. Step 3: Cross multiply
    129,940.40x = 179,347.44 × 76,227.68
  4. Step 4: Simplify right side
    129,940.40x = 13,671,239,265.14
  5. Step 5: Solve for x
    x = 13,671,239,265.14/129,940.40
  6. Step 6: Final answer
    x = 105,211.61

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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.