Home / 208,947.20-313,420.80-126,003.20

Finding the Fourth Proportional to 208,947.20, 313,420.80 and 126,003.20

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Solution

The fourth proportional to 208,947.20, 313,420.80 and 126,003.20 is: 189,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,947.20 : 313,420.80 = 126,003.20 : x
  2. Step 2: Convert to fraction form
    208,947.20/313,420.80 = 126,003.20/x
  3. Step 3: Cross multiply
    208,947.20x = 313,420.80 × 126,003.20
  4. Step 4: Simplify right side
    208,947.20x = 39,492,023,746.56
  5. Step 5: Solve for x
    x = 39,492,023,746.56/208,947.20
  6. Step 6: Final answer
    x = 189,004.80

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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.