Home / 99,685.30-149,542.80-35,638.60

Finding the Fourth Proportional to 99,685.30, 149,542.80 and 35,638.60

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Solution

The fourth proportional to 99,685.30, 149,542.80 and 35,638.60 is: 53,463.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,685.30 : 149,542.80 = 35,638.60 : x
  2. Step 2: Convert to fraction form
    99,685.30/149,542.80 = 35,638.60/x
  3. Step 3: Cross multiply
    99,685.30x = 149,542.80 × 35,638.60
  4. Step 4: Simplify right side
    99,685.30x = 5,329,496,032.08
  5. Step 5: Solve for x
    x = 5,329,496,032.08/99,685.30
  6. Step 6: Final answer
    x = 53,463.21

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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.