Home / 129,881.56-179,277.38-76,188.28

Finding the Fourth Proportional to 129,881.56, 179,277.38 and 76,188.28

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Solution

The fourth proportional to 129,881.56, 179,277.38 and 76,188.28 is: 105,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,881.56 : 179,277.38 = 76,188.28 : x
  2. Step 2: Convert to fraction form
    129,881.56/179,277.38 = 76,188.28/x
  3. Step 3: Cross multiply
    129,881.56x = 179,277.38 × 76,188.28
  4. Step 4: Simplify right side
    129,881.56x = 13,658,835,446.38
  5. Step 5: Solve for x
    x = 13,658,835,446.38/129,881.56
  6. Step 6: Final answer
    x = 105,163.78

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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.