Home / 136,780.25-188,772.76-113,769.48

Finding the Fourth Proportional to 136,780.25, 188,772.76 and 113,769.48

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Solution

The fourth proportional to 136,780.25, 188,772.76 and 113,769.48 is: 157,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.25 : 188,772.76 = 113,769.48 : x
  2. Step 2: Convert to fraction form
    136,780.25/188,772.76 = 113,769.48/x
  3. Step 3: Cross multiply
    136,780.25x = 188,772.76 × 113,769.48
  4. Step 4: Simplify right side
    136,780.25x = 21,476,577,515.08
  5. Step 5: Solve for x
    x = 21,476,577,515.08/136,780.25
  6. Step 6: Final answer
    x = 157,015.20

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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.