Home / 129,940.45-179,320.77-76,264.18

Finding the Fourth Proportional to 129,940.45, 179,320.77 and 76,264.18

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Solution

The fourth proportional to 129,940.45, 179,320.77 and 76,264.18 is: 105,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,940.45 : 179,320.77 = 76,264.18 : x
  2. Step 2: Convert to fraction form
    129,940.45/179,320.77 = 76,264.18/x
  3. Step 3: Cross multiply
    129,940.45x = 179,320.77 × 76,264.18
  4. Step 4: Simplify right side
    129,940.45x = 13,675,751,481.02
  5. Step 5: Solve for x
    x = 13,675,751,481.02/129,940.45
  6. Step 6: Final answer
    x = 105,246.30

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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.