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Finding the Fourth Proportional to 185,483.88, 278,193.51 and 85,635.54

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Solution

The fourth proportional to 185,483.88, 278,193.51 and 85,635.54 is: 128,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,483.88 : 278,193.51 = 85,635.54 : x
  2. Step 2: Convert to fraction form
    185,483.88/278,193.51 = 85,635.54/x
  3. Step 3: Cross multiply
    185,483.88x = 278,193.51 × 85,635.54
  4. Step 4: Simplify right side
    185,483.88x = 23,823,251,453.35
  5. Step 5: Solve for x
    x = 23,823,251,453.35/185,483.88
  6. Step 6: Final answer
    x = 128,438.39

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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.