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Finding the Fourth Proportional to 135,611.20, 203,416.80 and 65,497.60

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Solution

The fourth proportional to 135,611.20, 203,416.80 and 65,497.60 is: 98,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,611.20 : 203,416.80 = 65,497.60 : x
  2. Step 2: Convert to fraction form
    135,611.20/203,416.80 = 65,497.60/x
  3. Step 3: Cross multiply
    135,611.20x = 203,416.80 × 65,497.60
  4. Step 4: Simplify right side
    135,611.20x = 13,323,312,199.68
  5. Step 5: Solve for x
    x = 13,323,312,199.68/135,611.20
  6. Step 6: Final answer
    x = 98,246.40

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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.