Home / 136,906.64-205,390.20-42,137.36

Finding the Fourth Proportional to 136,906.64, 205,390.20 and 42,137.36

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Solution

The fourth proportional to 136,906.64, 205,390.20 and 42,137.36 is: 63,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,906.64 : 205,390.20 = 42,137.36 : x
  2. Step 2: Convert to fraction form
    136,906.64/205,390.20 = 42,137.36/x
  3. Step 3: Cross multiply
    136,906.64x = 205,390.20 × 42,137.36
  4. Step 4: Simplify right side
    136,906.64x = 8,654,600,797.87
  5. Step 5: Solve for x
    x = 8,654,600,797.87/136,906.64
  6. Step 6: Final answer
    x = 63,215.35

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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.