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Finding the Fourth Proportional to 135,515.04, 203,234.16 and 85,520.16

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Solution

The fourth proportional to 135,515.04, 203,234.16 and 85,520.16 is: 128,256.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,515.04 : 203,234.16 = 85,520.16 : x
  2. Step 2: Convert to fraction form
    135,515.04/203,234.16 = 85,520.16/x
  3. Step 3: Cross multiply
    135,515.04x = 203,234.16 × 85,520.16
  4. Step 4: Simplify right side
    135,515.04x = 17,380,617,880.67
  5. Step 5: Solve for x
    x = 17,380,617,880.67/135,515.04
  6. Step 6: Final answer
    x = 128,256.01

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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.