Home / 136,688.08-188,629.28-76,255.12

Finding the Fourth Proportional to 136,688.08, 188,629.28 and 76,255.12

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Solution

The fourth proportional to 136,688.08, 188,629.28 and 76,255.12 is: 105,231.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,688.08 : 188,629.28 = 76,255.12 : x
  2. Step 2: Convert to fraction form
    136,688.08/188,629.28 = 76,255.12/x
  3. Step 3: Cross multiply
    136,688.08x = 188,629.28 × 76,255.12
  4. Step 4: Simplify right side
    136,688.08x = 14,383,947,529.06
  5. Step 5: Solve for x
    x = 14,383,947,529.06/136,688.08
  6. Step 6: Final answer
    x = 105,231.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.