Home / 139,343.75-192,291.20-75,680.18

Finding the Fourth Proportional to 139,343.75, 192,291.20 and 75,680.18

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Solution

The fourth proportional to 139,343.75, 192,291.20 and 75,680.18 is: 104,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,343.75 : 192,291.20 = 75,680.18 : x
  2. Step 2: Convert to fraction form
    139,343.75/192,291.20 = 75,680.18/x
  3. Step 3: Cross multiply
    139,343.75x = 192,291.20 × 75,680.18
  4. Step 4: Simplify right side
    139,343.75x = 14,552,631,288.56
  5. Step 5: Solve for x
    x = 14,552,631,288.56/139,343.75
  6. Step 6: Final answer
    x = 104,436.92

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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.