Home / 208,629.54-287,908.92-113,136.21

Finding the Fourth Proportional to 208,629.54, 287,908.92 and 113,136.21

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Solution

The fourth proportional to 208,629.54, 287,908.92 and 113,136.21 is: 156,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,629.54 : 287,908.92 = 113,136.21 : x
  2. Step 2: Convert to fraction form
    208,629.54/287,908.92 = 113,136.21/x
  3. Step 3: Cross multiply
    208,629.54x = 287,908.92 × 113,136.21
  4. Step 4: Simplify right side
    208,629.54x = 32,572,924,033.99
  5. Step 5: Solve for x
    x = 32,572,924,033.99/208,629.54
  6. Step 6: Final answer
    x = 156,128.05

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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.