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Finding the Fourth Proportional to 109,436.40, 151,097.40 and 82,609.20

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Solution

The fourth proportional to 109,436.40, 151,097.40 and 82,609.20 is: 114,057.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,436.40 : 151,097.40 = 82,609.20 : x
  2. Step 2: Convert to fraction form
    109,436.40/151,097.40 = 82,609.20/x
  3. Step 3: Cross multiply
    109,436.40x = 151,097.40 × 82,609.20
  4. Step 4: Simplify right side
    109,436.40x = 12,482,035,336.08
  5. Step 5: Solve for x
    x = 12,482,035,336.08/109,436.40
  6. Step 6: Final answer
    x = 114,057.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.