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Finding the Fourth Proportional to 100,811.35, 151,220.61 and 34,242.82

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Solution

The fourth proportional to 100,811.35, 151,220.61 and 34,242.82 is: 51,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,811.35 : 151,220.61 = 34,242.82 : x
  2. Step 2: Convert to fraction form
    100,811.35/151,220.61 = 34,242.82/x
  3. Step 3: Cross multiply
    100,811.35x = 151,220.61 × 34,242.82
  4. Step 4: Simplify right side
    100,811.35x = 5,178,220,128.52
  5. Step 5: Solve for x
    x = 5,178,220,128.52/100,811.35
  6. Step 6: Final answer
    x = 51,365.45

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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.