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Finding the Fourth Proportional to 100,388.34, 150,524.10 and 53,615.70

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Solution

The fourth proportional to 100,388.34, 150,524.10 and 53,615.70 is: 80,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,388.34 : 150,524.10 = 53,615.70 : x
  2. Step 2: Convert to fraction form
    100,388.34/150,524.10 = 53,615.70/x
  3. Step 3: Cross multiply
    100,388.34x = 150,524.10 × 53,615.70
  4. Step 4: Simplify right side
    100,388.34x = 8,070,454,988.37
  5. Step 5: Solve for x
    x = 8,070,454,988.37/100,388.34
  6. Step 6: Final answer
    x = 80,392.35

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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.