Home / 139,851.20-192,980.08-83,251.52

Finding the Fourth Proportional to 139,851.20, 192,980.08 and 83,251.52

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Solution

The fourth proportional to 139,851.20, 192,980.08 and 83,251.52 is: 114,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,851.20 : 192,980.08 = 83,251.52 : x
  2. Step 2: Convert to fraction form
    139,851.20/192,980.08 = 83,251.52/x
  3. Step 3: Cross multiply
    139,851.20x = 192,980.08 × 83,251.52
  4. Step 4: Simplify right side
    139,851.20x = 16,065,884,989.72
  5. Step 5: Solve for x
    x = 16,065,884,989.72/139,851.20
  6. Step 6: Final answer
    x = 114,878.42

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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.