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Finding the Fourth Proportional to 90,136.08, 135,213.30 and 30,964.08

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Solution

The fourth proportional to 90,136.08, 135,213.30 and 30,964.08 is: 46,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,136.08 : 135,213.30 = 30,964.08 : x
  2. Step 2: Convert to fraction form
    90,136.08/135,213.30 = 30,964.08/x
  3. Step 3: Cross multiply
    90,136.08x = 135,213.30 × 30,964.08
  4. Step 4: Simplify right side
    90,136.08x = 4,186,755,438.26
  5. Step 5: Solve for x
    x = 4,186,755,438.26/90,136.08
  6. Step 6: Final answer
    x = 46,449.27

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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.