Home / 145,032.78-200,157.30-80,508.09

Finding the Fourth Proportional to 145,032.78, 200,157.30 and 80,508.09

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Solution

The fourth proportional to 145,032.78, 200,157.30 and 80,508.09 is: 111,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,032.78 : 200,157.30 = 80,508.09 : x
  2. Step 2: Convert to fraction form
    145,032.78/200,157.30 = 80,508.09/x
  3. Step 3: Cross multiply
    145,032.78x = 200,157.30 × 80,508.09
  4. Step 4: Simplify right side
    145,032.78x = 16,114,281,922.56
  5. Step 5: Solve for x
    x = 16,114,281,922.56/145,032.78
  6. Step 6: Final answer
    x = 111,107.86

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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.