Home / 136,911.36-205,315.20-53,760

Finding the Fourth Proportional to 136,911.36, 205,315.20 and 53,760

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Solution

The fourth proportional to 136,911.36, 205,315.20 and 53,760 is: 80,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,911.36 : 205,315.20 = 53,760 : x
  2. Step 2: Convert to fraction form
    136,911.36/205,315.20 = 53,760/x
  3. Step 3: Cross multiply
    136,911.36x = 205,315.20 × 53,760
  4. Step 4: Simplify right side
    136,911.36x = 11,037,745,152
  5. Step 5: Solve for x
    x = 11,037,745,152/136,911.36
  6. Step 6: Final answer
    x = 80,619.64

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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.