Home / 84,138.71-126,204.55-34,216.88

Finding the Fourth Proportional to 84,138.71, 126,204.55 and 34,216.88

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Solution

The fourth proportional to 84,138.71, 126,204.55 and 34,216.88 is: 51,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,138.71 : 126,204.55 = 34,216.88 : x
  2. Step 2: Convert to fraction form
    84,138.71/126,204.55 = 34,216.88/x
  3. Step 3: Cross multiply
    84,138.71x = 126,204.55 × 34,216.88
  4. Step 4: Simplify right side
    84,138.71x = 4,318,325,226.24
  5. Step 5: Solve for x
    x = 4,318,325,226.24/84,138.71
  6. Step 6: Final answer
    x = 51,323.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.