Home / 129,939.45-179,319.39-76,263.18

Finding the Fourth Proportional to 129,939.45, 179,319.39 and 76,263.18

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Solution

The fourth proportional to 129,939.45, 179,319.39 and 76,263.18 is: 105,244.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,939.45 : 179,319.39 = 76,263.18 : x
  2. Step 2: Convert to fraction form
    129,939.45/179,319.39 = 76,263.18/x
  3. Step 3: Cross multiply
    129,939.45x = 179,319.39 × 76,263.18
  4. Step 4: Simplify right side
    129,939.45x = 13,675,466,917.06
  5. Step 5: Solve for x
    x = 13,675,466,917.06/129,939.45
  6. Step 6: Final answer
    x = 105,244.92

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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.