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Finding the Fourth Proportional to 91,815.20, 137,714.70 and 25,249.40

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Solution

The fourth proportional to 91,815.20, 137,714.70 and 25,249.40 is: 37,871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.20 : 137,714.70 = 25,249.40 : x
  2. Step 2: Convert to fraction form
    91,815.20/137,714.70 = 25,249.40/x
  3. Step 3: Cross multiply
    91,815.20x = 137,714.70 × 25,249.40
  4. Step 4: Simplify right side
    91,815.20x = 3,477,213,546.18
  5. Step 5: Solve for x
    x = 3,477,213,546.18/91,815.20
  6. Step 6: Final answer
    x = 37,871.87

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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.