Home / 79,709.04-109,201.89-76,719.60

Finding the Fourth Proportional to 79,709.04, 109,201.89 and 76,719.60

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Solution

The fourth proportional to 79,709.04, 109,201.89 and 76,719.60 is: 105,106.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,709.04 : 109,201.89 = 76,719.60 : x
  2. Step 2: Convert to fraction form
    79,709.04/109,201.89 = 76,719.60/x
  3. Step 3: Cross multiply
    79,709.04x = 109,201.89 × 76,719.60
  4. Step 4: Simplify right side
    79,709.04x = 8,377,925,320.04
  5. Step 5: Solve for x
    x = 8,377,925,320.04/79,709.04
  6. Step 6: Final answer
    x = 105,106.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.