Home / 139,833.42-192,969.14-76,171.22

Finding the Fourth Proportional to 139,833.42, 192,969.14 and 76,171.22

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Solution

The fourth proportional to 139,833.42, 192,969.14 and 76,171.22 is: 105,115.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,833.42 : 192,969.14 = 76,171.22 : x
  2. Step 2: Convert to fraction form
    139,833.42/192,969.14 = 76,171.22/x
  3. Step 3: Cross multiply
    139,833.42x = 192,969.14 × 76,171.22
  4. Step 4: Simplify right side
    139,833.42x = 14,698,693,470.45
  5. Step 5: Solve for x
    x = 14,698,693,470.45/139,833.42
  6. Step 6: Final answer
    x = 105,115.74

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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.