Home / 139,785.20-192,905.88-76,124.24

Finding the Fourth Proportional to 139,785.20, 192,905.88 and 76,124.24

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Solution

The fourth proportional to 139,785.20, 192,905.88 and 76,124.24 is: 105,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,785.20 : 192,905.88 = 76,124.24 : x
  2. Step 2: Convert to fraction form
    139,785.20/192,905.88 = 76,124.24/x
  3. Step 3: Cross multiply
    139,785.20x = 192,905.88 × 76,124.24
  4. Step 4: Simplify right side
    139,785.20x = 14,684,813,506.53
  5. Step 5: Solve for x
    x = 14,684,813,506.53/139,785.20
  6. Step 6: Final answer
    x = 105,052.71

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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.