Home / 139,828.32-192,962.79-76,165.97

Finding the Fourth Proportional to 139,828.32, 192,962.79 and 76,165.97

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Solution

The fourth proportional to 139,828.32, 192,962.79 and 76,165.97 is: 105,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,828.32 : 192,962.79 = 76,165.97 : x
  2. Step 2: Convert to fraction form
    139,828.32/192,962.79 = 76,165.97/x
  3. Step 3: Cross multiply
    139,828.32x = 192,962.79 × 76,165.97
  4. Step 4: Simplify right side
    139,828.32x = 14,697,197,109.44
  5. Step 5: Solve for x
    x = 14,697,197,109.44/139,828.32
  6. Step 6: Final answer
    x = 105,108.87

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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.