Home / 128,246.46-192,405.18-53,401.80

Finding the Fourth Proportional to 128,246.46, 192,405.18 and 53,401.80

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Solution

The fourth proportional to 128,246.46, 192,405.18 and 53,401.80 is: 80,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.46 : 192,405.18 = 53,401.80 : x
  2. Step 2: Convert to fraction form
    128,246.46/192,405.18 = 53,401.80/x
  3. Step 3: Cross multiply
    128,246.46x = 192,405.18 × 53,401.80
  4. Step 4: Simplify right side
    128,246.46x = 10,274,782,941.32
  5. Step 5: Solve for x
    x = 10,274,782,941.32/128,246.46
  6. Step 6: Final answer
    x = 80,117.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.