Home / 136,918.10-188,940.20-76,476.70

Finding the Fourth Proportional to 136,918.10, 188,940.20 and 76,476.70

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Solution

The fourth proportional to 136,918.10, 188,940.20 and 76,476.70 is: 105,534.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,918.10 : 188,940.20 = 76,476.70 : x
  2. Step 2: Convert to fraction form
    136,918.10/188,940.20 = 76,476.70/x
  3. Step 3: Cross multiply
    136,918.10x = 188,940.20 × 76,476.70
  4. Step 4: Simplify right side
    136,918.10x = 14,449,522,993.34
  5. Step 5: Solve for x
    x = 14,449,522,993.34/136,918.10
  6. Step 6: Final answer
    x = 105,534.06

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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.