Home / 135,461.44-186,920.82-78,100.12

Finding the Fourth Proportional to 135,461.44, 186,920.82 and 78,100.12

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Solution

The fourth proportional to 135,461.44, 186,920.82 and 78,100.12 is: 107,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,461.44 : 186,920.82 = 78,100.12 : x
  2. Step 2: Convert to fraction form
    135,461.44/186,920.82 = 78,100.12/x
  3. Step 3: Cross multiply
    135,461.44x = 186,920.82 × 78,100.12
  4. Step 4: Simplify right side
    135,461.44x = 14,598,538,472.50
  5. Step 5: Solve for x
    x = 14,598,538,472.50/135,461.44
  6. Step 6: Final answer
    x = 107,768.96

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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.