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Finding the Fourth Proportional to 159,494.10, 239,022.45 and 129,969.60

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Solution

The fourth proportional to 159,494.10, 239,022.45 and 129,969.60 is: 194,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,494.10 : 239,022.45 = 129,969.60 : x
  2. Step 2: Convert to fraction form
    159,494.10/239,022.45 = 129,969.60/x
  3. Step 3: Cross multiply
    159,494.10x = 239,022.45 × 129,969.60
  4. Step 4: Simplify right side
    159,494.10x = 31,065,652,217.52
  5. Step 5: Solve for x
    x = 31,065,652,217.52/159,494.10
  6. Step 6: Final answer
    x = 194,776.18

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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.