Home / 139,234.38-192,138.30-75,570.81

Finding the Fourth Proportional to 139,234.38, 192,138.30 and 75,570.81

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Solution

The fourth proportional to 139,234.38, 192,138.30 and 75,570.81 is: 104,284.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.38 : 192,138.30 = 75,570.81 : x
  2. Step 2: Convert to fraction form
    139,234.38/192,138.30 = 75,570.81/x
  3. Step 3: Cross multiply
    139,234.38x = 192,138.30 × 75,570.81
  4. Step 4: Simplify right side
    139,234.38x = 14,520,046,963.02
  5. Step 5: Solve for x
    x = 14,520,046,963.02/139,234.38
  6. Step 6: Final answer
    x = 104,284.93

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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.