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Finding the Fourth Proportional to 92,287.40, 138,431.10 and 91,704.20

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Solution

The fourth proportional to 92,287.40, 138,431.10 and 91,704.20 is: 137,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,287.40 : 138,431.10 = 91,704.20 : x
  2. Step 2: Convert to fraction form
    92,287.40/138,431.10 = 91,704.20/x
  3. Step 3: Cross multiply
    92,287.40x = 138,431.10 × 91,704.20
  4. Step 4: Simplify right side
    92,287.40x = 12,694,713,280.62
  5. Step 5: Solve for x
    x = 12,694,713,280.62/92,287.40
  6. Step 6: Final answer
    x = 137,556.30

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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.