Home / 156,782.40-235,076.40-90,189.60

Finding the Fourth Proportional to 156,782.40, 235,076.40 and 90,189.60

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Solution

The fourth proportional to 156,782.40, 235,076.40 and 90,189.60 is: 135,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.40 : 235,076.40 = 90,189.60 : x
  2. Step 2: Convert to fraction form
    156,782.40/235,076.40 = 90,189.60/x
  3. Step 3: Cross multiply
    156,782.40x = 235,076.40 × 90,189.60
  4. Step 4: Simplify right side
    156,782.40x = 21,201,446,485.44
  5. Step 5: Solve for x
    x = 21,201,446,485.44/156,782.40
  6. Step 6: Final answer
    x = 135,228.49

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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.