Home / 139,740.36-192,414.59-105,335.07

Finding the Fourth Proportional to 139,740.36, 192,414.59 and 105,335.07

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Solution

The fourth proportional to 139,740.36, 192,414.59 and 105,335.07 is: 145,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740.36 : 192,414.59 = 105,335.07 : x
  2. Step 2: Convert to fraction form
    139,740.36/192,414.59 = 105,335.07/x
  3. Step 3: Cross multiply
    139,740.36x = 192,414.59 × 105,335.07
  4. Step 4: Simplify right side
    139,740.36x = 20,268,002,817.92
  5. Step 5: Solve for x
    x = 20,268,002,817.92/139,740.36
  6. Step 6: Final answer
    x = 145,040.44

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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.