Home / 129,741.62-179,060.64-76,047.80

Finding the Fourth Proportional to 129,741.62, 179,060.64 and 76,047.80

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Solution

The fourth proportional to 129,741.62, 179,060.64 and 76,047.80 is: 104,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.62 : 179,060.64 = 76,047.80 : x
  2. Step 2: Convert to fraction form
    129,741.62/179,060.64 = 76,047.80/x
  3. Step 3: Cross multiply
    129,741.62x = 179,060.64 × 76,047.80
  4. Step 4: Simplify right side
    129,741.62x = 13,617,167,738.59
  5. Step 5: Solve for x
    x = 13,617,167,738.59/129,741.62
  6. Step 6: Final answer
    x = 104,956.05

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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.