Home / 239,435.20-359,201.40-81,679.60

Finding the Fourth Proportional to 239,435.20, 359,201.40 and 81,679.60

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Solution

The fourth proportional to 239,435.20, 359,201.40 and 81,679.60 is: 122,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,435.20 : 359,201.40 = 81,679.60 : x
  2. Step 2: Convert to fraction form
    239,435.20/359,201.40 = 81,679.60/x
  3. Step 3: Cross multiply
    239,435.20x = 359,201.40 × 81,679.60
  4. Step 4: Simplify right side
    239,435.20x = 29,339,426,671.44
  5. Step 5: Solve for x
    x = 29,339,426,671.44/239,435.20
  6. Step 6: Final answer
    x = 122,535.98

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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.