Home / 129,898.72-179,273.92-76,228.80

Finding the Fourth Proportional to 129,898.72, 179,273.92 and 76,228.80

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Solution

The fourth proportional to 129,898.72, 179,273.92 and 76,228.80 is: 105,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,898.72 : 179,273.92 = 76,228.80 : x
  2. Step 2: Convert to fraction form
    129,898.72/179,273.92 = 76,228.80/x
  3. Step 3: Cross multiply
    129,898.72x = 179,273.92 × 76,228.80
  4. Step 4: Simplify right side
    129,898.72x = 13,665,835,792.90
  5. Step 5: Solve for x
    x = 13,665,835,792.90/129,898.72
  6. Step 6: Final answer
    x = 105,203.78

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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.