Home / 129,888.09-179,231.88-75,429.63

Finding the Fourth Proportional to 129,888.09, 179,231.88 and 75,429.63

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Solution

The fourth proportional to 129,888.09, 179,231.88 and 75,429.63 is: 104,084.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,888.09 : 179,231.88 = 75,429.63 : x
  2. Step 2: Convert to fraction form
    129,888.09/179,231.88 = 75,429.63/x
  3. Step 3: Cross multiply
    129,888.09x = 179,231.88 × 75,429.63
  4. Step 4: Simplify right side
    129,888.09x = 13,519,394,622.43
  5. Step 5: Solve for x
    x = 13,519,394,622.43/129,888.09
  6. Step 6: Final answer
    x = 104,084.94

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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.