Home / 136,941.06-188,975.16-76,512.20

Finding the Fourth Proportional to 136,941.06, 188,975.16 and 76,512.20

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Solution

The fourth proportional to 136,941.06, 188,975.16 and 76,512.20 is: 105,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,941.06 : 188,975.16 = 76,512.20 : x
  2. Step 2: Convert to fraction form
    136,941.06/188,975.16 = 76,512.20/x
  3. Step 3: Cross multiply
    136,941.06x = 188,975.16 × 76,512.20
  4. Step 4: Simplify right side
    136,941.06x = 14,458,904,292.08
  5. Step 5: Solve for x
    x = 14,458,904,292.08/136,941.06
  6. Step 6: Final answer
    x = 105,584.87

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1.5x scale

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.