Home / 136,652.39-188,580.57-76,221.47

Finding the Fourth Proportional to 136,652.39, 188,580.57 and 76,221.47

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Solution

The fourth proportional to 136,652.39, 188,580.57 and 76,221.47 is: 105,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,652.39 : 188,580.57 = 76,221.47 : x
  2. Step 2: Convert to fraction form
    136,652.39/188,580.57 = 76,221.47/x
  3. Step 3: Cross multiply
    136,652.39x = 188,580.57 × 76,221.47
  4. Step 4: Simplify right side
    136,652.39x = 14,373,887,315.94
  5. Step 5: Solve for x
    x = 14,373,887,315.94/136,652.39
  6. Step 6: Final answer
    x = 105,185.78

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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.