Home / 129,943.32-179,322.78-76,229.22

Finding the Fourth Proportional to 129,943.32, 179,322.78 and 76,229.22

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Solution

The fourth proportional to 129,943.32, 179,322.78 and 76,229.22 is: 105,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,943.32 : 179,322.78 = 76,229.22 : x
  2. Step 2: Convert to fraction form
    129,943.32/179,322.78 = 76,229.22/x
  3. Step 3: Cross multiply
    129,943.32x = 179,322.78 × 76,229.22
  4. Step 4: Simplify right side
    129,943.32x = 13,669,635,647.63
  5. Step 5: Solve for x
    x = 13,669,635,647.63/129,943.32
  6. Step 6: Final answer
    x = 105,196.91

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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.