Home / 136,921.32-205,260.70-53,796.20

Finding the Fourth Proportional to 136,921.32, 205,260.70 and 53,796.20

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Solution

The fourth proportional to 136,921.32, 205,260.70 and 53,796.20 is: 80,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,921.32 : 205,260.70 = 53,796.20 : x
  2. Step 2: Convert to fraction form
    136,921.32/205,260.70 = 53,796.20/x
  3. Step 3: Cross multiply
    136,921.32x = 205,260.70 × 53,796.20
  4. Step 4: Simplify right side
    136,921.32x = 11,042,245,669.34
  5. Step 5: Solve for x
    x = 11,042,245,669.34/136,921.32
  6. Step 6: Final answer
    x = 80,646.65

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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.