Home / 136,438.88-188,285.76-76,009.66

Finding the Fourth Proportional to 136,438.88, 188,285.76 and 76,009.66

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Solution

The fourth proportional to 136,438.88, 188,285.76 and 76,009.66 is: 104,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,438.88 : 188,285.76 = 76,009.66 : x
  2. Step 2: Convert to fraction form
    136,438.88/188,285.76 = 76,009.66/x
  3. Step 3: Cross multiply
    136,438.88x = 188,285.76 × 76,009.66
  4. Step 4: Simplify right side
    136,438.88x = 14,311,536,786.12
  5. Step 5: Solve for x
    x = 14,311,536,786.12/136,438.88
  6. Step 6: Final answer
    x = 104,893.39

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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.