Home / 136,905.90-188,930.55-75,650.77

Finding the Fourth Proportional to 136,905.90, 188,930.55 and 75,650.77

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Solution

The fourth proportional to 136,905.90, 188,930.55 and 75,650.77 is: 104,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,905.90 : 188,930.55 = 75,650.77 : x
  2. Step 2: Convert to fraction form
    136,905.90/188,930.55 = 75,650.77/x
  3. Step 3: Cross multiply
    136,905.90x = 188,930.55 × 75,650.77
  4. Step 4: Simplify right side
    136,905.90x = 14,292,741,041.14
  5. Step 5: Solve for x
    x = 14,292,741,041.14/136,905.90
  6. Step 6: Final answer
    x = 104,398.28

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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.