Home / 135,588.40-203,440.20-65,431.60

Finding the Fourth Proportional to 135,588.40, 203,440.20 and 65,431.60

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Solution

The fourth proportional to 135,588.40, 203,440.20 and 65,431.60 is: 98,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,588.40 : 203,440.20 = 65,431.60 : x
  2. Step 2: Convert to fraction form
    135,588.40/203,440.20 = 65,431.60/x
  3. Step 3: Cross multiply
    135,588.40x = 203,440.20 × 65,431.60
  4. Step 4: Simplify right side
    135,588.40x = 13,311,417,790.32
  5. Step 5: Solve for x
    x = 13,311,417,790.32/135,588.40
  6. Step 6: Final answer
    x = 98,175.20

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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.