Home / 136,927.20-188,940.84-76,490.38

Finding the Fourth Proportional to 136,927.20, 188,940.84 and 76,490.38

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Solution

The fourth proportional to 136,927.20, 188,940.84 and 76,490.38 is: 105,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,927.20 : 188,940.84 = 76,490.38 : x
  2. Step 2: Convert to fraction form
    136,927.20/188,940.84 = 76,490.38/x
  3. Step 3: Cross multiply
    136,927.20x = 188,940.84 × 76,490.38
  4. Step 4: Simplify right side
    136,927.20x = 14,452,156,649.12
  5. Step 5: Solve for x
    x = 14,452,156,649.12/136,927.20
  6. Step 6: Final answer
    x = 105,546.28

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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.