Home / 111,721.71-167,623.87-51,778.77

Finding the Fourth Proportional to 111,721.71, 167,623.87 and 51,778.77

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Solution

The fourth proportional to 111,721.71, 167,623.87 and 51,778.77 is: 77,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,721.71 : 167,623.87 = 51,778.77 : x
  2. Step 2: Convert to fraction form
    111,721.71/167,623.87 = 51,778.77/x
  3. Step 3: Cross multiply
    111,721.71x = 167,623.87 × 51,778.77
  4. Step 4: Simplify right side
    111,721.71x = 8,679,357,811.24
  5. Step 5: Solve for x
    x = 8,679,357,811.24/111,721.71
  6. Step 6: Final answer
    x = 77,687.30

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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.