Home / 126,902.08-175,045.58-81,639

Finding the Fourth Proportional to 126,902.08, 175,045.58 and 81,639

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Solution

The fourth proportional to 126,902.08, 175,045.58 and 81,639 is: 112,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,902.08 : 175,045.58 = 81,639 : x
  2. Step 2: Convert to fraction form
    126,902.08/175,045.58 = 81,639/x
  3. Step 3: Cross multiply
    126,902.08x = 175,045.58 × 81,639
  4. Step 4: Simplify right side
    126,902.08x = 14,290,546,105.62
  5. Step 5: Solve for x
    x = 14,290,546,105.62/126,902.08
  6. Step 6: Final answer
    x = 112,610.81

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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.