Home / 208,193.40-312,435.90-89,949.60

Finding the Fourth Proportional to 208,193.40, 312,435.90 and 89,949.60

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Solution

The fourth proportional to 208,193.40, 312,435.90 and 89,949.60 is: 134,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,193.40 : 312,435.90 = 89,949.60 : x
  2. Step 2: Convert to fraction form
    208,193.40/312,435.90 = 89,949.60/x
  3. Step 3: Cross multiply
    208,193.40x = 312,435.90 × 89,949.60
  4. Step 4: Simplify right side
    208,193.40x = 28,103,484,230.64
  5. Step 5: Solve for x
    x = 28,103,484,230.64/208,193.40
  6. Step 6: Final answer
    x = 134,987.39

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1.5x scale

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.