Home / 83,845.20-125,767.80-77,940.30

Finding the Fourth Proportional to 83,845.20, 125,767.80 and 77,940.30

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Solution

The fourth proportional to 83,845.20, 125,767.80 and 77,940.30 is: 116,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,845.20 : 125,767.80 = 77,940.30 : x
  2. Step 2: Convert to fraction form
    83,845.20/125,767.80 = 77,940.30/x
  3. Step 3: Cross multiply
    83,845.20x = 125,767.80 × 77,940.30
  4. Step 4: Simplify right side
    83,845.20x = 9,802,380,062.34
  5. Step 5: Solve for x
    x = 9,802,380,062.34/83,845.20
  6. Step 6: Final answer
    x = 116,910.45

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1.5x scale

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.