Home / 126,138.90-188,994.24-76,113.89

Finding the Fourth Proportional to 126,138.90, 188,994.24 and 76,113.89

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Solution

The fourth proportional to 126,138.90, 188,994.24 and 76,113.89 is: 114,041.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,138.90 : 188,994.24 = 76,113.89 : x
  2. Step 2: Convert to fraction form
    126,138.90/188,994.24 = 76,113.89/x
  3. Step 3: Cross multiply
    126,138.90x = 188,994.24 × 76,113.89
  4. Step 4: Simplify right side
    126,138.90x = 14,385,085,849.02
  5. Step 5: Solve for x
    x = 14,385,085,849.02/126,138.90
  6. Step 6: Final answer
    x = 114,041.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.