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Finding the Fourth Proportional to 113,782.60, 170,673.90 and 100,660.60

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Solution

The fourth proportional to 113,782.60, 170,673.90 and 100,660.60 is: 150,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,782.60 : 170,673.90 = 100,660.60 : x
  2. Step 2: Convert to fraction form
    113,782.60/170,673.90 = 100,660.60/x
  3. Step 3: Cross multiply
    113,782.60x = 170,673.90 × 100,660.60
  4. Step 4: Simplify right side
    113,782.60x = 17,180,137,178.34
  5. Step 5: Solve for x
    x = 17,180,137,178.34/113,782.60
  6. Step 6: Final answer
    x = 150,990.90

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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.