Home / 84,117.89-126,176.60-20,936.84

Finding the Fourth Proportional to 84,117.89, 126,176.60 and 20,936.84

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Solution

The fourth proportional to 84,117.89, 126,176.60 and 20,936.84 is: 31,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,117.89 : 126,176.60 = 20,936.84 : x
  2. Step 2: Convert to fraction form
    84,117.89/126,176.60 = 20,936.84/x
  3. Step 3: Cross multiply
    84,117.89x = 126,176.60 × 20,936.84
  4. Step 4: Simplify right side
    84,117.89x = 2,641,738,550.38
  5. Step 5: Solve for x
    x = 2,641,738,550.38/84,117.89
  6. Step 6: Final answer
    x = 31,405.19

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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.