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Finding the Fourth Proportional to 90,297.52, 135,396.96 and 71,697.04

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Solution

The fourth proportional to 90,297.52, 135,396.96 and 71,697.04 is: 107,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,297.52 : 135,396.96 = 71,697.04 : x
  2. Step 2: Convert to fraction form
    90,297.52/135,396.96 = 71,697.04/x
  3. Step 3: Cross multiply
    90,297.52x = 135,396.96 × 71,697.04
  4. Step 4: Simplify right side
    90,297.52x = 9,707,561,257.00
  5. Step 5: Solve for x
    x = 9,707,561,257.00/90,297.52
  6. Step 6: Final answer
    x = 107,506.40

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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.