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Finding the Fourth Proportional to 135,640.80, 203,403.60 and 65,541.60

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Solution

The fourth proportional to 135,640.80, 203,403.60 and 65,541.60 is: 98,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,640.80 : 203,403.60 = 65,541.60 : x
  2. Step 2: Convert to fraction form
    135,640.80/203,403.60 = 65,541.60/x
  3. Step 3: Cross multiply
    135,640.80x = 203,403.60 × 65,541.60
  4. Step 4: Simplify right side
    135,640.80x = 13,331,397,389.76
  5. Step 5: Solve for x
    x = 13,331,397,389.76/135,640.80
  6. Step 6: Final answer
    x = 98,284.57

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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.