Home / 82,166.27-122,655.06-72,201.78

Finding the Fourth Proportional to 82,166.27, 122,655.06 and 72,201.78

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Solution

The fourth proportional to 82,166.27, 122,655.06 and 72,201.78 is: 107,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,166.27 : 122,655.06 = 72,201.78 : x
  2. Step 2: Convert to fraction form
    82,166.27/122,655.06 = 72,201.78/x
  3. Step 3: Cross multiply
    82,166.27x = 122,655.06 × 72,201.78
  4. Step 4: Simplify right side
    82,166.27x = 8,855,913,658.01
  5. Step 5: Solve for x
    x = 8,855,913,658.01/82,166.27
  6. Step 6: Final answer
    x = 107,780.41

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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.