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Finding the Fourth Proportional to 100,902.40, 151,245.60 and 34,280.80

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Solution

The fourth proportional to 100,902.40, 151,245.60 and 34,280.80 is: 51,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,902.40 : 151,245.60 = 34,280.80 : x
  2. Step 2: Convert to fraction form
    100,902.40/151,245.60 = 34,280.80/x
  3. Step 3: Cross multiply
    100,902.40x = 151,245.60 × 34,280.80
  4. Step 4: Simplify right side
    100,902.40x = 5,184,820,164.48
  5. Step 5: Solve for x
    x = 5,184,820,164.48/100,902.40
  6. Step 6: Final answer
    x = 51,384.51

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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.