Home / 129,942.18-179,321.54-76,228.11

Finding the Fourth Proportional to 129,942.18, 179,321.54 and 76,228.11

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Solution

The fourth proportional to 129,942.18, 179,321.54 and 76,228.11 is: 105,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,942.18 : 179,321.54 = 76,228.11 : x
  2. Step 2: Convert to fraction form
    129,942.18/179,321.54 = 76,228.11/x
  3. Step 3: Cross multiply
    129,942.18x = 179,321.54 × 76,228.11
  4. Step 4: Simplify right side
    129,942.18x = 13,669,341,695.35
  5. Step 5: Solve for x
    x = 13,669,341,695.35/129,942.18
  6. Step 6: Final answer
    x = 105,195.57

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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.