Home / 208,987.20-313,557.60-84,340.80

Finding the Fourth Proportional to 208,987.20, 313,557.60 and 84,340.80

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Solution

The fourth proportional to 208,987.20, 313,557.60 and 84,340.80 is: 126,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,987.20 : 313,557.60 = 84,340.80 : x
  2. Step 2: Convert to fraction form
    208,987.20/313,557.60 = 84,340.80/x
  3. Step 3: Cross multiply
    208,987.20x = 313,557.60 × 84,340.80
  4. Step 4: Simplify right side
    208,987.20x = 26,445,698,830.08
  5. Step 5: Solve for x
    x = 26,445,698,830.08/208,987.20
  6. Step 6: Final answer
    x = 126,542.19

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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.