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Finding the Fourth Proportional to 250,166.86, 375,261.22 and 81,685.86

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Solution

The fourth proportional to 250,166.86, 375,261.22 and 81,685.86 is: 122,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,166.86 : 375,261.22 = 81,685.86 : x
  2. Step 2: Convert to fraction form
    250,166.86/375,261.22 = 81,685.86/x
  3. Step 3: Cross multiply
    250,166.86x = 375,261.22 × 81,685.86
  4. Step 4: Simplify right side
    250,166.86x = 30,653,535,480.35
  5. Step 5: Solve for x
    x = 30,653,535,480.35/250,166.86
  6. Step 6: Final answer
    x = 122,532.36

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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.