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Finding the Fourth Proportional to 136,240.90, 188,012.44 and 75,815.44

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Solution

The fourth proportional to 136,240.90, 188,012.44 and 75,815.44 is: 104,625.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,240.90 : 188,012.44 = 75,815.44 : x
  2. Step 2: Convert to fraction form
    136,240.90/188,012.44 = 75,815.44/x
  3. Step 3: Cross multiply
    136,240.90x = 188,012.44 × 75,815.44
  4. Step 4: Simplify right side
    136,240.90x = 14,254,245,864.07
  5. Step 5: Solve for x
    x = 14,254,245,864.07/136,240.90
  6. Step 6: Final answer
    x = 104,625.31

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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.