Home / 139,809.40-192,937.24-76,145.84

Finding the Fourth Proportional to 139,809.40, 192,937.24 and 76,145.84

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Solution

The fourth proportional to 139,809.40, 192,937.24 and 76,145.84 is: 105,081.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,809.40 : 192,937.24 = 76,145.84 : x
  2. Step 2: Convert to fraction form
    139,809.40/192,937.24 = 76,145.84/x
  3. Step 3: Cross multiply
    139,809.40x = 192,937.24 × 76,145.84
  4. Step 4: Simplify right side
    139,809.40x = 14,691,368,207.08
  5. Step 5: Solve for x
    x = 14,691,368,207.08/139,809.40
  6. Step 6: Final answer
    x = 105,081.41

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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.