Home / 139,439.76-192,428.09-75,777.55

Finding the Fourth Proportional to 139,439.76, 192,428.09 and 75,777.55

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Solution

The fourth proportional to 139,439.76, 192,428.09 and 75,777.55 is: 104,573.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,439.76 : 192,428.09 = 75,777.55 : x
  2. Step 2: Convert to fraction form
    139,439.76/192,428.09 = 75,777.55/x
  3. Step 3: Cross multiply
    139,439.76x = 192,428.09 × 75,777.55
  4. Step 4: Simplify right side
    139,439.76x = 14,581,729,211.38
  5. Step 5: Solve for x
    x = 14,581,729,211.38/139,439.76
  6. Step 6: Final answer
    x = 104,573.68

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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.