Home / 82,176.28-122,669.96-72,211.78

Finding the Fourth Proportional to 82,176.28, 122,669.96 and 72,211.78

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Solution

The fourth proportional to 82,176.28, 122,669.96 and 72,211.78 is: 107,795.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,176.28 : 122,669.96 = 72,211.78 : x
  2. Step 2: Convert to fraction form
    82,176.28/122,669.96 = 72,211.78/x
  3. Step 3: Cross multiply
    82,176.28x = 122,669.96 × 72,211.78
  4. Step 4: Simplify right side
    82,176.28x = 8,858,216,164.13
  5. Step 5: Solve for x
    x = 8,858,216,164.13/82,176.28
  6. Step 6: Final answer
    x = 107,795.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.