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Finding the Fourth Proportional to 113,816.60, 170,708.70 and 38,940.20

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Solution

The fourth proportional to 113,816.60, 170,708.70 and 38,940.20 is: 58,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,816.60 : 170,708.70 = 38,940.20 : x
  2. Step 2: Convert to fraction form
    113,816.60/170,708.70 = 38,940.20/x
  3. Step 3: Cross multiply
    113,816.60x = 170,708.70 × 38,940.20
  4. Step 4: Simplify right side
    113,816.60x = 6,647,430,919.74
  5. Step 5: Solve for x
    x = 6,647,430,919.74/113,816.60
  6. Step 6: Final answer
    x = 58,404.76

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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.